Ephemeris Generator

Ephemeris Settings

      Target Body: Asteroid 50000 Quaoar (2002 LM60)
Observer Location: User Specified Location
      Coordinates: 654'30.0''E, 4441'05.0''N, 2930 m

  From: A.D. 2005-08-20 00:00 UT
    To: A.D. 2005-08-28 00:00   
  Step: 1 hour
Format: Calendar Date and Time

Output Quantities: 1-4,8-10,19-20,23-24,27,29,33
 Ref. Frame, RA/Dec Format: J2000, HMS
Apparent Coordinates Model: Airless

HORIZONS Body Information

*******************************************************************************
JPL/HORIZONS              50000 Quaoar (2002 LM60)         2005-Aug-16 06:49:17
Rec #: 50000 (+COV)   Soln.date: 2005-Jun-27_12:55:05    # obs: 117 (1954-2005)
 
FK5/J2000.0 helio. ecliptic osc. elements (AU, DAYS, DEG, period=Julian yrs):  
 
  EPOCH=  2451815.5 ! 2000-Sep-28.00 (CT)         Residual RMS= .59898         
    EC= .03866273798337272 QR= 41.42618281818464  TP= 2481054.506835609        
    OM= 189.0501882627379  W= 165.460695132926    IN= 8.002640165131981        
    A= 43.09224707599874   MA= -101.8750837547918 ADIST= 44.75831133381284     
    PER= 282.88304         N= .003484218          ANGMOM= .112838207           
    DAN= 44.70074          DDN= 41.47562          L= 354.6465547               
    B= 2.0028977                                  TP= 2080-Oct-17.0068356      
 
Physical parameters (KM, SEC, rotational period in hours):
    GM= n.a.               RAD= n.a.              ROTPER= 17.6788              
    H= 2.7016              G= .150                B-V= n.a.                    
                           ALBEDO= n.a.           STYP= n.a.                   
 
ASTEROID comments: 
1: soln ref.= JPL#3, OCC=3
2: source=ORB
*******************************************************************************

HORIZONS Generated Ephemeris

*******************************************************************************
Ephemeris / WWW_USER Tue Aug 16 06:49:17 2005  Pasadena, USA     / Horizons    
*******************************************************************************
Target body name: 50000 Quaoar (2002 LM60)        {source: JPL#3}
Center body name: Earth (399)                     {source: DE405}
Center-site name: (User Defined Site)
*******************************************************************************
Start time      : A.D. 2005-Aug-20 00:00:00.0000 UT      
Stop  time      : A.D. 2005-Aug-28 00:00:00.0000 UT      
Step-size       : 60 minutes
*******************************************************************************
Center geodetic : 6.908333,    44.6848,     2.9296{E-lon(deg),Lat(deg),Alt(km)}
Center cylindric: 6.908333,  4544.3803,  4464.5663{E-lon(deg),Dxy(km),Dz(km)}
Center pole/equ : High-precision EOP model        {East-longitude +}
Center radii    : 6378.1 x 6378.1 x 6356.8 km     {Equator, meridian, pole}    
Target pole/equ : No model available
Target radii    : (unavailable)                                                
Target primary  : Sun                             {source: DE405}
Interfering body: MOON (Req= 1737.400) km         {source: DE405}
Deflecting body : Sun, EARTH                      {source: DE405}
Deflecting GMs  : 1.3271E+11, 3.9860E+05 km^3/s^2                              
Small perturbers: Ceres, Pallas, Vesta            {source: SB405-CPV-2}
Small body GMs  : 6.32E+01, 1.43E+01, 1.78E+01 km^3/s^2                        
Atmos refraction: NO (AIRLESS)
RA format       : HMS
Time format     : CAL 
EOP file        : eop.050719.p051010                                           
EOP coverage    : DATA-BASED 1962-JAN-20 TO 2005-JUL-19. PREDICTS-> 2005-OCT-09
Units conversion: 1 AU= 149597870.691 km, c= 299792.458 km/s, 1 day= 86400.0 s 
Table cut-offs 1: Elevation (  0.0deg=YES),Airmass (>38.000=NO), Daylight (YES)
Table cut-offs 2: Solar Elongation (  0.0,180.0=NO )                           
*******************************************************************************
Initial FK5/J2000.0 heliocentric ecliptic osculating elements (AU, DAYS, DEG):
  EPOCH=  2451815.5 ! 2000-Sep-28.00 (CT)         Residual RMS= .59898         
    EC= .03866273798337272 QR= 41.42618281818464  TP= 2481054.506835609        
    OM= 189.0501882627379  W= 165.460695132926    IN= 8.002640165131981        
Asteroid physical parameters (KM, SEC, rotational period in hours):
    GM= n.a.               RAD= n.a.              ROTPER= 17.6788              
    H= 2.7016              G= .150                B-V= n.a.                    
                           ALBEDO= n.a.           STYP= n.a.                   
****************************************************************************************************************************************************************************************************************************
 Date__(UT)__HR:MN     R.A._(ICRF/J2000.0)_DEC R.A.__(a-apparent)__DEC dRA*cosD d(DEC)/dt Azi_(a-appr)_Elev a-mass  APmag Illu%             r      rdot         delta    deldot    S-O-T /r    S-T-O PsAng PsAMV Cnst GlxLat
****************************************************************************************************************************************************************************************************************************

>..... Elevation Cut-off Requested .....<


>..... Daylight Cut-off Requested .....<

 2005-Aug-20 19:00 C   16 49 59.29 -15 05 33.6 16 50 18.66 -15 06 13.9    -0.41     -0.34 189.4986  29.7083  2.010  19.24 100.0 43.3323999244  -0.15741 43.0581902995  28.04308 105.0869 /T   1.2894  98.9 273.5  Oph  18.40
 2005-Aug-20 20:00 Am  16 49 59.26 -15 05 34.0 16 50 18.63 -15 06 14.3    -0.41     -0.34 205.5600  26.4797  2.232  19.24 100.0 43.3323961383  -0.15741 43.0588661546  28.12876 105.0468 /T   1.2897  98.9 273.5  Oph  18.40
 2005-Aug-20 21:00  m  16 49 59.23 -15 05 34.3 16 50 18.60 -15 06 14.7    -0.40     -0.34 220.0961  20.6751  2.808  19.24 100.0 43.3323923522  -0.15742 43.0595439817  28.20568 105.0066 /T   1.2899  98.9 273.5  Oph  18.40
 2005-Aug-20 22:00  m  16 49 59.21 -15 05 34.6 16 50 18.57 -15 06 15.0    -0.39     -0.34 232.9286  12.9152  4.371  19.24 100.0 43.3323885660  -0.15742 43.0602235089  28.26893 104.9664 /T   1.2902  98.9 273.5  Oph  18.40
 2005-Aug-20 23:00  m  16 49 59.18 -15 05 35.0 16 50 18.53 -15 06 15.3    -0.38     -0.34 244.3546   3.7887 12.337  19.24 100.0 43.3323847799  -0.15742 43.0609043564  28.31454 104.9261 /T   1.2904  98.9 273.5  Oph  18.40

>..... Elevation Cut-off Requested .....<


>..... Daylight Cut-off Requested .....<

 2005-Aug-21 19:00 N   16 49 58.71 -15 05 42.0 16 50 18.06 -15 06 22.3    -0.36     -0.35 190.5868  29.5835  2.018  19.24 100.0 43.3323090547  -0.15743 43.0743952712  28.17430 104.1306 /T   1.2949  98.8 273.5  Oph  18.40
 2005-Aug-21 20:00 Am  16 49 58.69 -15 05 42.3 16 50 18.03 -15 06 22.7    -0.35     -0.35 206.5662  26.1688  2.256  19.24 100.0 43.3323052683  -0.15743 43.0750742959  28.25941 104.0905 /T   1.2951  98.8 273.5  Oph  18.40
 2005-Aug-21 21:00  m  16 49 58.67 -15 05 42.7 16 50 18.01 -15 06 23.0    -0.34     -0.35 220.9888  20.2164  2.868  19.24 100.0 43.3323014820  -0.15743 43.0757552712  28.33540 104.0503 /T   1.2953  98.8 273.5  Oph  18.40
 2005-Aug-21 22:00  m  16 49 58.64 -15 05 43.0 16 50 17.98 -15 06 23.4    -0.33     -0.35 233.7161  12.3499  4.558  19.24 100.0 43.3322976956  -0.15743 43.0764379174  28.39740 104.0101 /T   1.2956  98.8 273.5  Oph  18.40
 2005-Aug-21 23:00  m  16 49 58.62 -15 05 43.4 16 50 17.95 -15 06 23.7    -0.32     -0.34 245.0661   3.1518 13.958  19.24 100.0 43.3322939091  -0.15743 43.0771218485  28.44150 103.9698 /T   1.2958  98.8 273.5  Oph  18.40

>..... Elevation Cut-off Requested .....<


>..... Daylight Cut-off Requested .....<

 2005-Aug-22 19:00 N   16 49 58.23 -15 05 50.5 16 50 17.56 -15 06 30.8    -0.30     -0.36 191.6710  29.4456  2.026  19.24 100.0 43.3322181785  -0.15744 43.0906712547  28.29818 103.1741 /T   1.3000  98.6 273.5  Oph  18.40
 2005-Aug-22 20:00 Am  16 49 58.21 -15 05 50.9 16 50 17.53 -15 06 31.2    -0.30     -0.36 207.5650  25.8470  2.282  19.24 100.0 43.3322143919  -0.15744 43.0913532718  28.38250 103.1340 /T   1.3002  98.6 273.5  Oph  18.40
 2005-Aug-22 21:00  m  16 49 58.19 -15 05 51.2 16 50 17.51 -15 06 31.6    -0.29     -0.35 221.8736  19.7497  2.931  19.24 100.0 43.3322106052  -0.15744 43.0920372173  28.45735 103.0939 /T   1.3004  98.6 273.5  Oph  18.40
 2005-Aug-22 22:00  m  16 49 58.17 -15 05 51.6 16 50 17.49 -15 06 31.9    -0.28     -0.35 234.4972  11.7791  4.763  19.24 100.0 43.3322068186  -0.15744 43.0927228039  28.51793 103.0536 /T   1.3006  98.6 273.5  Oph  18.40
 2005-Aug-22 23:00  m  16 49 58.15 -15 05 51.9 16 50 17.46 -15 06 32.3    -0.27     -0.35 245.7734   2.5115 16.001  19.24 100.0 43.3322030319  -0.15744 43.0934096396  28.56042 103.0133 /T   1.3008  98.6 273.5  Oph  18.40

>..... Elevation Cut-off Requested .....<


>..... Daylight Cut-off Requested .....<

 2005-Aug-23 19:00 N   16 49 57.84 -15 05 59.3 16 50 17.14 -15 06 39.5    -0.25     -0.37 192.7510  29.2947  2.036  19.24 100.0 43.3321272959  -0.15745 43.1070139677  28.41473 102.2175 /T   1.3047  98.5 273.5  Oph  18.40
 2005-Aug-23 20:00 A   16 49 57.82 -15 05 59.6 16 50 17.13 -15 06 39.9    -0.24     -0.36 208.5563  25.5146  2.309  19.24 100.0 43.3321235090  -0.15745 43.1076987958  28.49808 102.1774 /T   1.3049  98.5 273.5  Oph  18.40
 2005-Aug-23 21:00  m  16 49 57.81 -15 06 00.0 16 50 17.11 -15 06 40.3    -0.23     -0.36 222.7505  19.2750  2.999  19.24 100.0 43.3321197221  -0.15745 43.1083855294  28.57164 102.1372 /T   1.3051  98.5 273.5  Oph  18.40
 2005-Aug-23 22:00  m  16 49 57.79 -15 06 00.4 16 50 17.09 -15 06 40.6    -0.22     -0.36 235.2720  11.2030  4.990  19.24 100.0 43.3321159351  -0.15745 43.1090738736  28.63069 102.0970 /T   1.3053  98.5 273.5  Oph  18.40
 2005-Aug-23 23:00  m  16 49 57.78 -15 06 00.7 16 50 17.07 -15 06 41.0    -0.21     -0.36 246.4769   1.8678 18.619  19.24 100.0 43.3321121482  -0.15745 43.1097634306  28.67149 102.0567 /T   1.3055  98.5 273.5  Oph  18.40

>..... Elevation Cut-off Requested .....<


>..... Daylight Cut-off Requested .....<

 2005-Aug-24 19:00 N   16 49 57.54 -15 06 08.2 16 50 16.83 -15 06 48.4    -0.19     -0.37 193.8265  29.1310  2.046  19.24 100.0 43.3320364068  -0.15746 43.1234190198  28.52384 101.2607 /T   1.3091  98.4 273.5  Oph  18.40
 2005-Aug-24 20:00 A   16 49 57.53 -15 06 08.6 16 50 16.81 -15 06 48.8    -0.18     -0.37 209.5399  25.1716  2.338  19.24 100.0 43.3320326197  -0.15746 43.1241064725  28.60612 101.2206 /T   1.3092  98.4 273.5  Oph  18.40
 2005-Aug-24 21:00  m  16 49 57.52 -15 06 09.0 16 50 16.80 -15 06 49.1    -0.18     -0.37 223.6197  18.7927  3.072  19.24 100.0 43.3320288325  -0.15746 43.1247958073  28.67832 101.1804 /T   1.3094  98.4 273.5  Oph  18.40
 2005-Aug-24 22:00  m  16 49 57.50 -15 06 09.3 16 50 16.78 -15 06 49.5    -0.17     -0.37 236.0408  10.6217  5.241  19.24 100.0 43.3320250453  -0.15746 43.1254867216  28.73577 101.1402 /T   1.3096  98.4 273.5  Oph  18.40
 2005-Aug-24 23:00  m  16 49 57.49 -15 06 09.7 16 50 16.77 -15 06 49.9    -0.15     -0.37 247.1767   1.2210 22.022  19.24 100.0 43.3320212581  -0.15746 43.1261788117  28.77483 101.0999 /T   1.3098  98.4 273.5  Oph  18.40

>..... Elevation Cut-off Requested .....<


>..... Daylight Cut-off Requested .....<

 2005-Aug-25 19:00 N   16 49 57.33 -15 06 17.3 16 50 16.61 -15 06 57.4    -0.13     -0.38 194.8970  28.9545  2.057  19.24 100.0 43.3319455114  -0.15747 43.1398819056  28.62530 100.3038 /T   1.3131  98.3 273.5  Oph  18.40
 2005-Aug-25 20:00 A   16 49 57.33 -15 06 17.7 16 50 16.60 -15 06 57.8    -0.13     -0.38 210.5157  24.8182  2.369  19.24 100.0 43.3319417239  -0.15747 43.1405717921  28.70650 100.2637 /T   1.3132  98.3 273.5  Oph  18.40
 2005-Aug-25 21:00  m  16 49 57.32 -15 06 18.1 16 50 16.58 -15 06 58.2    -0.12     -0.38 224.4813  18.3028  3.149  19.24 100.0 43.3319379365  -0.15747 43.1412635363  28.77731 100.2235 /T   1.3134  98.3 273.5  Oph  18.40
 2005-Aug-25 22:00  m  16 49 57.31 -15 06 18.5 16 50 16.57 -15 06 58.6    -0.11     -0.38 236.8037  10.0353  5.522  19.24 100.0 43.3319341490  -0.15747 43.1419568284  28.83316 100.1832 /T   1.3136  98.2 273.5  Oph  18.40
 2005-Aug-25 23:00  m  16 49 57.30 -15 06 18.9 16 50 16.56 -15 06 59.0    -0.10     -0.38 247.8729   0.5710 26.493  19.24 100.0 43.3319303615  -0.15747 43.1426512589  28.87048 100.1429 /T   1.3138  98.2 273.5  Oph  18.40

>..... Elevation Cut-off Requested .....<


>..... Daylight Cut-off Requested .....<

 2005-Aug-26 19:00 N   16 49 57.22 -15 06 26.7 16 50 16.48 -15 07 06.7    -0.08     -0.39 195.9625  28.7655  2.070  19.24 100.0 43.3318546096  -0.15748 43.1563980114  28.71889  99.3467 /T   1.3167  98.1 273.5  Oph  18.40
 2005-Aug-26 20:00 A   16 49 57.22 -15 06 27.1 16 50 16.48 -15 07 07.1    -0.07     -0.39 211.4837  24.4547  2.401  19.24 100.0 43.3318508219  -0.15748 43.1570901363  28.79903  99.3065 /T   1.3168  98.1 273.5  Oph  18.40
 2005-Aug-26 21:00     16 49 57.21 -15 06 27.4 16 50 16.47 -15 07 07.5    -0.06     -0.39 225.3352  17.8056  3.232  19.24 100.0 43.3318470341  -0.15748 43.1577840940  28.86850  99.2663 /T   1.3170  98.1 273.5  Oph  18.40
 2005-Aug-26 22:00  m  16 49 57.21 -15 06 27.8 16 50 16.46 -15 07 07.9    -0.05     -0.38 237.5607   9.4441  5.836  19.24 100.0 43.3318432464  -0.15748 43.1584795673  28.92276  99.2261 /T   1.3172  98.1 273.5  Oph  18.40
 2005-Aug-26 23:00  m  16 49 57.20 -15 06 28.2 16 50 16.45 -15 07 08.3    -0.04     -0.38 248.5657  -0.0819 32.370  19.24 100.0 43.3318394587  -0.15748 43.1591761410  28.95835  99.1857 /T   1.3173  98.1 273.5  Oph  18.40

>..... Elevation Cut-off Requested .....<


>..... Daylight Cut-off Requested .....<

 2005-Aug-27 19:00 N   16 49 57.20 -15 06 36.2 16 50 16.45 -15 07 16.2    -0.02     -0.40 197.0225  28.5639  2.083  19.24 100.0 43.3317637015  -0.15749 43.1729626264  28.80438  98.3894 /T   1.3199  98.0 273.5  Oph  18.39
 2005-Aug-27 20:00 A   16 49 57.20 -15 06 36.6 16 50 16.45 -15 07 16.6    -0.01     -0.40 212.4439  24.0812  2.436  19.25 100.0 43.3317599135  -0.15749 43.1736567907  28.88353  98.3492 /T   1.3201  98.0 273.5  Oph  18.39
 2005-Aug-27 21:00     16 49 57.20 -15 06 37.0 16 50 16.45 -15 07 17.0    -0.01     -0.39 226.1816  17.3013  3.320  19.25 100.0 43.3317561255  -0.15749 43.1743527621  28.95169  98.3090 /T   1.3202  98.0 273.5  Oph  18.39
 2005-Aug-27 22:00     16 49 57.20 -15 06 37.4 16 50 16.44 -15 07 17.4     0.00     -0.39 238.3122   8.8481  6.190  19.25 100.0 43.3317523375  -0.15749 43.1750502163  29.00440  98.2687 /T   1.3204  98.0 273.5  Oph  18.39

>..... Elevation Cut-off Requested .....<

****************************************************************************************************************************************************************************************************************************
Column meaning:
 
TIME

  Prior to 1962, times are UT1. Dates thereafter are UTC. Any 'b' symbol in
the 1st-column denotes a B.C. date. First-column blank (" ") denotes an A.D.
date. Calendar dates prior to 1582-Oct-15 are in the Julian calendar system.
Later calendar dates are in the Gregorian system.

  The uniform Coordinate Time scale is used internally. Conversion between
CT and the selected non-uniform UT output scale has not been determined for
UTC times after the next July or January 1st.  The last known leap-second
is used over any future interval.

  NOTE: "n.a." in output means quantity "not available" at the print-time.
 
SOLAR PRESENCE
  Time tag is followed by a blank, then a solar-presence symbol:

        '*'  Daylight (refracted solar upper-limb on or above apparent horizon)
        'C'  Civil twilight/dawn
        'N'  Nautical twilight/dawn
        'A'  Astronomical twilight/dawn
        ' '  Night OR geocentric ephemeris

LUNAR PRESENCE
  The solar-presence symbol is immediately followed by a lunar-presence symbol:

        'm'  Refracted upper-limb of Moon on or above apparent horizon
        ' '  Refracted upper-limb of Moon below apparent horizon OR geocentric
             ephemeris
 
 R.A._(ICRF/J2000.0)_DEC =
   J2000.0 astrometric right ascension and declination of target. Corrected
for light-time. Units: HMS (HH MM SS.ff) and DMS (DD MM SS.f)
 
 R.A._(a-apparent)__DEC. =
   Airless apparent right ascension and declination of the target with respect
to the Earth true-equator and the meridian containing the Earth true equinox of
date.   Corrected for light-time, gravitational deflection of light, stellar
aberration, precession & nutation. Units:HMS (HH MM SS.ff) and DMS (DD MM SS.f)
 
 dRA*cosD d(DEC)/dt =
    The rate of change of target apparent RA and DEC (airless). d(RA)/dt is
multiplied by the cosine of the declination. Units: ARCSECONDS PER HOUR
 
 Azi_(a-appr)_Elev =
   Airless apparent azimuth and elevation of target. Corrected for light-time,
the gravitational deflection of light, stellar aberration, precession and
nutation. Azimuth measured North(0) -> East(90) -> South(180) -> West(270),
elevation with respect to plane perpendicular to local zenith direction.
TOPOCENTRIC ONLY. Units: DEGREES
 
 a-mass =
   Relative optical airmass. Topocentric EARTH sites, ABOVE HORIZON ONLY.
Unitless.
 
 APmag =
   Asteroid's approximate apparent visual magnitude by following definition:
APmag = H + 5*log10(delta) + 5*log10(r) - 2.5*log10((1-G)*phi1 + G*phi2).
In principle, accurate to ~ +/- 0.1 magnitude. For solar phase angles > 90 deg,
the error could exceed 1 magnitude. No values are output for phase angles
greater than 120 degrees, since the extrapolation error could be large and
unknown.  Units: NONE
 
 Illu% =
   Fraction of target circular disk illuminated by Sun (phase), as seen by
observer.  Units: PERCENT
 
 r       rdot =
   Target apparent heliocentric range ("r") and range-rate ("rdot") as seen
by observer. Units: AU and KM/S
 
 delta  deldot =
   Target apparent range ("delta") and range-rate ("delta-dot") relative to
observer at print-time. "deldot" is a projection along the line-of-sight from
the coordinate center and indicates direction of motion. A positive deldot
means the target is moving away from the observer/coordinate-center. A negative
deldot means the target is moving towards the observer.  Units: AU and KM/S
 
 S-O-T /r =
    Sun-Observer-Target angle; target's apparent solar elongation seen from
observer location at print-time. If negative, the target center is behind
the Sun. Angular units: DEGREES.

    The '/r' column is a Sun-relative code, output for observing sites
with defined rotation models only.

         /T indicates target trails Sun (evening sky)
         /L indicates target leads Sun  (morning sky)

    NOTE: The S-O-T solar elongation angle is the total separation in any
direction. It does not indicate the angle of Sun leading or trailing.
 
 S-T-O =
   Sun-Target-Observer angle; target's apparent PHASE ANGLE as seen at
observer's location at print time.  Units: DEGREES
 
 PsAng PsAMV =
   The position angles of the extended Sun->target radius vector ("PsAng")
and the negative of the target's heliocentric velocity vector ("PsAMV"),
as seen in the observer's plane-of-sky, measured CCW (east) from reference
frame North Celestial Pole. Small-bodies only. Units: DEGREES.
 
 Cnst =
   Constellation ID; the 3-letter abbreviation for the constellation name of
target's astrometric position, as defined by IAU (1930) boundary delineation.
See documentation for list of abbreviations.
 
 GlxLat =
   Observer-centered Galactic System II (post WW II) latitude of the target's
apparent position. Corrected for light-time, the gravitational deflection of
light and stellar aberration. Units: DEGREES


 Computations by ...
     Solar System Dynamics Group, Horizons On-Line Ephemeris System
     4800 Oak Grove Drive, Jet Propulsion Laboratory
     Pasadena, CA  91109   USA
     Information: http://ssd.jpl.nasa.gov/
     Connect    : telnet://ssd.jpl.nasa.gov:6775  (via browser)
                  telnet ssd.jpl.nasa.gov 6775    (via command-line)
     Author     : Jon.Giorgini@jpl.nasa.gov

****************************************************************************************************************************************************************************************************************************

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