The text below shows what a typical ephemeris generated by HORIZONS should look like - it was copied and pasted directly out of a browser window. Ephemerides that do not conform to the HORIZONS format will be rejected by the OT.
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JPL/HORIZONS 2 Pallas (A802 FA) 2021-Nov-25 01:37:14
Rec #: 2 (+COV) Soln.date: 2021-Nov-10_04:32:18 # obs: 8986 (1804-2021)
IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs):
EPOCH= 2449860.5 ! 1995-May-23.00 (TDB) Residual RMS= .37248
EC= .2338718245610453 QR= 2.123202022785147 TP= 2449888.2387017086
OM= 173.299720872062 W= 309.6980700058111 IN= 34.8067960750926
A= 2.771340476505324 MA= 354.0740855566733 ADIST= 3.419478930225501
PER= 4.61363 N= .21363344 ANGMOM= .02784275
DAN= 2.27927 DDN= 3.07984 L= 128.6147078
B= -26.0524618 MOID= 1.22409999 TP= 1995-Jun-19.7387017086
Asteroid physical parameters (km, seconds, rotational period in hours):
GM= 14.3 RAD= 272.5 ROTPER= 7.8132
H= 4.22 G= .110 B-V= .635
ALBEDO= .101 STYP= B
ASTEROID comments:
1: soln ref.= JPL#49, OCC=0
2: source=ORB
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Ephemeris / WWW_USER Thu Nov 25 01:37:14 2021 Pasadena, USA / Horizons
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Target body name: 2 Pallas (A802 FA) {source: JPL#49}
Center body name: Earth (399) {source: DE441}
Center-site name: Atacama Large mm/sub-mm Array (ALMA, center)
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Start time : A.D. 2021-Nov-23 00:00:00.0000 UT
Stop time : A.D. 2022-Nov-23 00:00:00.0000 UT
Step-size : 14400 minutes
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Target pole/equ : IAU {West-longitude positive}
Target radii : 275.0 x 258.0 x 238.0 km {Equator, meridian, pole}
Center geodetic : 292.245252,-23.029211,5.0748870 {E-lon(deg),Lat(deg),Alt(km)}
Center cylindric: 292.245252,5877.51430,-2481.682 {E-lon(deg),Dxy(km),Dz(km)}
Center pole/equ : ITRF93 {East-longitude positive}
Center radii : 6378.1 x 6378.1 x 6356.8 km {Equator, meridian, pole}
Target primary : Sun
Vis. interferer : MOON (R_eq= 1737.400) km {source: DE441}
Rel. light bend : Sun, EARTH {source: DE441}
Rel. lght bnd GM: 1.3271E+11, 3.9860E+05 km^3/s^2
Small-body perts: Yes {source: SB441-N16}
Atmos refraction: NO (AIRLESS)
RA format : HMS
Time format : CAL
EOP file : eop.211123.p220216
EOP coverage : DATA-BASED 1962-JAN-20 TO 2021-NOV-23. PREDICTS-> 2022-FEB-15
Units conversion: 1 au= 149597870.700 km, c= 299792.458 km/s, 1 day= 86400.0 s
Table cut-offs 1: Elevation (-90.0deg=NO ),Airmass (>38.000=NO), Daylight (NO )
Table cut-offs 2: Solar elongation ( 0.0,180.0=NO ),Local Hour Angle( 0.0=NO )
Table cut-offs 3: RA/DEC angular rate ( 0.0=NO )
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Initial IAU76/J2000 heliocentric ecliptic osculating elements (au, days, deg.):
EPOCH= 2449860.5 ! 1995-May-23.00 (TDB) Residual RMS= .37248
EC= .2338718245610453 QR= 2.123202022785147 TP= 2449888.2387017086
OM= 173.299720872062 W= 309.6980700058111 IN= 34.8067960750926
Equivalent ICRF heliocentric cartesian coordinates (au, au/d):
X=-8.772609677396623E-01 Y= 1.913607209947000E+00 Z=-3.186495571164625E-01
VX=-1.170946514074898E-02 VY=-5.524088469211407E-03 VZ= 1.888876172855325E-03
Asteroid physical parameters (km, seconds, rotational period in hours):
GM= 14.3 RAD= 272.5 ROTPER= 7.8132
H= 4.22 G= .110 B-V= .635
ALBEDO= .101 STYP= B
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Date__(UT)__HR:MN R.A._________(ICRF)_________DEC Ang-diam delta deldot
**********************************************************************************************
$$SOE
2021-Nov-23 00:00 A 22 50 16.793999 -11 56 27.28440 0.280824 2.70040288098657 22.3747456
2021-Dec-03 00:00 A 22 55 44.644163 -12 18 15.77017 0.267971 2.82992073319386 22.5898771
2021-Dec-13 00:00 Nm 23 02 53.610740 -12 24 32.78705 0.256335 2.95838322710588 22.1330438
2021-Dec-23 00:00 N 23 11 30.126431 -12 17 26.84881 0.246027 3.08233971188776 21.1599398
2022-Jan-02 00:00 N 23 21 22.102397 -11 58 55.56776 0.237041 3.19918190090926 19.7605042
2022-Jan-12 00:00 Nm 23 32 19.316031 -11 30 44.52487 0.229347 3.30650035089502 17.9576269
2022-Jan-22 00:00 N 23 44 11.735141 -10 54 39.61357 0.222882 3.40241637347632 15.8980342
2022-Feb-01 00:00 N 23 56 51.832169 -10 12 11.42441 0.217559 3.48565807925177 13.6190177
2022-Feb-11 00:00 Nm 00 10 13.439941 -09 24 45.80344 0.213316 3.55499994373594 11.1511967
2022-Feb-21 00:00 A 00 24 10.715417 -08 33 49.38248 0.210079 3.60977178274681 8.6184210
2022-Mar-03 00:00 A 00 38 39.990428 -07 40 36.20762 0.207782 3.64967489161781 6.0180910
2022-Mar-13 00:00 Am 00 53 38.018183 -06 46 22.98603 0.206384 3.67439760307169 3.3972043
2022-Mar-23 00:00 01 09 01.769840 -05 52 25.96048 0.205837 3.68417178343085 0.8482752
2022-Apr-02 00:00 01 24 49.840116 -04 59 52.18247 0.206105 3.67937764621516 -1.6597170
2022-Apr-12 00:00 m 01 41 00.417013 -04 09 56.15093 0.207174 3.66038365299680 -4.0649532
2022-Apr-22 00:00 01 57 31.827651 -03 23 49.16058 0.209021 3.62803719193081 -6.3112252
2022-May-02 00:00 02 14 23.441132 -02 42 37.40664 0.211641 3.58313608714007 -8.4449769
2022-May-12 00:00 m 02 31 33.531370 -02 07 36.23797 0.215039 3.52650835378701 -10.3964475
2022-May-22 00:00 02 49 00.470153 -01 39 54.24724 0.219214 3.45935446572210 -12.1461882
2022-Jun-01 00:00 03 06 43.040468 -01 20 39.18649 0.224183 3.38267418602595 -13.7415749
2022-Jun-11 00:00 m 03 24 38.368551 -01 11 05.38423 0.229969 3.29756032677099 -15.1136368
2022-Jun-21 00:00 03 42 43.693204 -01 12 15.96518 0.236585 3.20534638994320 -16.2769054
2022-Jul-01 00:00 04 00 55.967013 -01 25 16.01658 0.244068 3.10707389780470 -17.2675804
2022-Jul-11 00:00 m 04 19 10.115486 -01 51 08.97258 0.252448 3.00393607373007 -18.0258314
2022-Jul-21 00:00 04 37 21.303175 -02 30 41.63720 0.261746 2.89722247446922 -18.5950274
2022-Jul-31 00:00 m 04 55 23.658429 -03 24 41.99710 0.272010 2.78790064679093 -18.9935523
2022-Aug-10 00:00 m 05 13 09.190906 -04 33 42.08726 0.283266 2.67712352951536 -19.1771768
2022-Aug-20 00:00 05 30 30.338603 -05 57 51.67063 0.295533 2.56599769465667 -19.2093895
2022-Aug-30 00:00 m 05 47 17.619422 -07 37 15.19997 0.308853 2.45533546782246 -19.0893385
2022-Sep-09 00:00 m 06 03 19.529074 -09 31 21.61689 0.323228 2.34614061323848 -18.7909526
2022-Sep-19 00:00 06 18 24.894622 -11 39 12.17457 0.338656 2.23925735792677 -18.3832297
2022-Sep-29 00:00 m 06 32 19.367985 -13 59 26.81385 0.355139 2.13532469625281 -17.8456827
2022-Oct-09 00:00 m 06 44 46.693190 -16 29 44.05400 0.372615 2.03517650031244 -17.1659952
2022-Oct-19 00:00 06 55 30.362447 -19 07 04.17563 0.391006 1.93944980264050 -16.3973292
2022-Oct-29 00:00 Am 07 04 09.718060 -21 47 30.41483 0.410191 1.84874117176821 -15.4954150
2022-Nov-08 00:00 Am 07 10 24.058493 -24 25 26.12444 0.429926 1.76387983133252 -14.4506970
2022-Nov-18 00:00 A 07 13 54.628293 -26 54 11.45907 0.449899 1.68557105432760 -13.2785329
$$EOE
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Column meaning:
TIME
Times PRIOR to 1962 are UT1, a mean-solar time closely related to the
prior but now-deprecated GMT. Times AFTER 1962 are in UTC, the current
civil or "wall-clock" time-scale. UTC is kept within 0.9 seconds of UT1
using integer leap-seconds for 1972 and later years.
Conversion from the internal Barycentric Dynamical Time (TDB) of solar
system dynamics to the non-uniform civil UT time-scale requested for output
has not been determined for UTC times after the next July or January 1st.
Therefore, the last known leap-second is used as a constant over future
intervals.
Time tags refer to the UT time-scale conversion from TDB on Earth
regardless of observer location within the solar system, although clock
rates may differ due to the local gravity field and no analog to "UT"
may be defined for that location.
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.
NOTE: "n.a." in output means quantity "not available" at the print-time.
SOLAR PRESENCE (OBSERVING SITE)
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 (OBSERVING SITE)
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)_________DEC' =
Astrometric right ascension and declination of the target center with
respect to the observing site (coordinate origin) in the reference frame of
the planetary ephemeris (ICRF). Compensated for down-leg light-time delay
aberration.
Units: RA in hours-minutes-seconds of time, HH MM SS.ff{ffff}
DEC in degrees-minutes-seconds of arc, sDD MN SC.f{ffff}
'Ang-diam' =
The equatorial angular width of the target body full disk, if it were fully
illuminated and visible to the observer. If the target body diameter is unknown
"n.a." is output.
Units: ARCSECONDS
'delta deldot' =
Apparent range ("delta", light-time aberrated) and range-rate ("delta-dot")
of the target center relative to the observer. A positive "deldot" means the
target center is moving away from the observer, negative indicates movement
toward the observer. Units: AU and KM/S
Computations by ...
Solar System Dynamics Group, Horizons On-Line Ephemeris System
4800 Oak Grove Drive, Jet Propulsion Laboratory
Pasadena, CA 91109 USA
General site: https://ssd.jpl.nasa.gov/
Mailing list: https://ssd.jpl.nasa.gov/email_list.html
System news : https://ssd.jpl.nasa.gov/horizons/news.html
User Guide : https://ssd.jpl.nasa.gov/horizons/manual.html
Connect : browser https://ssd.jpl.nasa.gov/horizons/app.html#/x
API https://ssd-api.jpl.nasa.gov/doc/horizons.html
command-line telnet ssd.jpl.nasa.gov 6775
e-mail/batch https://ssd.jpl.nasa.gov/ftp/ssd/hrzn_batch.txt
scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS
Author : Jon.D.Giorgini@jpl.nasa.gov
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