2340 Hathor (1976 UA)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4499362759 ± 2.00e+00
Semi-major axis (a)0.8438607999 AU ± 3.00e+00
Inclination (i)5.86058780° ± 4.00e+00
Long. of Asc. Node (Ω)211.28370419° ± 5.00e+00
Arg. of Perihelion (ω)40.11847477° ± 6.00e+00
Mean Anomaly (M)201.97974796° ± 9.88e-06
Mean Motion (n)1.2714698219°/day ± 6.78e+00
Perihelion dist (q)0.46417721 AU ± 2.36e+00
Aphelion dist (Q)1.22354439 AU ± 4.67e+00
Orbital Period0.77518653 yr ± 4.13e+00
NGA Modelr2
A2-3.12283792e-06 AU/d²
Physical Parameters
H (abs. magnitude)20.41
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual1.084″
Uncertainty0
Orbit TypeAten
MOID0.006333 AU
Observations Used1452
Oppositions15
Arc Total1976-2026
First Observation Used1976-10-22
Last Observation Used2026-01-18
Observations (2217)
Date Type RA Dec Mag Band Observatory
1976-11-27 03:58:59 A 00 40 46.49 -04 31 48.7 695
1980-12-07 08:48:35 A 07 28 39.64 +01 11 13.6 20.0 A 801
1980-12-29 11:15:29 A 05 40 40.67 -11 05 15.8 474
1980-12-29 11:49:58 A 05 40 30.23 -11 06 02.1 18.9 474
1980-12-31 10:32:00 A 05 26 28.40 -12 04 00.1 474
1980-12-31 11:08:30 A 05 26 16.82 -12 04 44.8 474
1981-01-03 04:59:55 A 05 05 53.61 -13 18 12.8 A 801
1981-01-05 07:34:59 A 04 50 05.25 -14 05 10.4 675
1981-01-06 03:18:19 A 04 43 56.92 -14 21 21.6 19.5 A 801
1981-01-07 06:36:59 A 04 35 28.25 -14 41 46.1 675
1983-10-18 07:17:43 A 07 00 54.91 +23 03 11.4 A 801
1983-10-18 10:51:02 A 06 59 20.89 +22 59 51.3 675
1983-10-28 07:39:01 A 05 04 42.93 +16 19 09.5 675
1983-11-08 07:04:02 A 03 14 56.25 +06 25 44.4 A 801
1994-12-20 15:14:14 C 09 59 03.93 -12 08 32.8 413
1994-12-20 15:18:36 C 09 59 04.34 -12 08 43.0 413
1994-12-21 16:06:06 C 10 01 39.43 -13 10 46.8 413
1994-12-21 16:10:20 C 10 01 39.81 -13 10 56.7 413
1994-12-22 14:40:08 C 10 04 07.32 -14 09 50.4 413
1994-12-22 14:43:05 C 10 04 07.62 -14 09 57.4 413
1997-10-24 14:55:07 C 06 54 41.44 +17 23 23.4 a 568
1997-10-24 15:06:53 C 06 54 40.52 +17 23 15.6 a 568
1997-10-24 15:09:59 C 06 54 40.35 +17 23 13.4 a 568
1997-10-24 15:15:00 C 06 54 40.04 +17 23 10.5 a 568
1997-10-31 10:16:20 C 06 41 52.35 +15 29 44.6 z 711
1997-10-31 10:26:58 C 06 41 51.29 +15 29 37.2 z 711
1997-11-01 10:24:06 C 06 39 29.82 +15 11 37.1 z 711
1997-11-01 10:35:47 C 06 39 28.56 +15 11 27.7 z 711
1997-11-09 17:55:00 C 06 14 22.10 +12 25 45.6 360
1997-11-09 18:01:29 C 06 14 21.04 +12 25 39.6 360
1997-11-11 03:07:54 C 06 09 10.40 +11 55 08.0 046
1997-11-11 03:10:48 C 06 09 09.99 +11 55 05.4 046
1997-11-11 03:14:49 C 06 09 09.29 +11 55 01.3 046
1997-11-11 03:16:26 C 06 09 08.98 +11 54 59.3 046
1997-11-11 03:18:06 C 06 09 08.71 +11 54 58.4 046
1997-11-23 15:30:29 C 05 10 25.96 +06 50 28.4 360
1997-11-23 15:35:15 C 05 10 24.88 +06 50 23.2 360
1997-12-08 00:39:29 C 03 54 56.32 +01 39 24.5 z 587
1997-12-08 00:44:29 C 03 54 55.34 +01 39 22.0 z 587
1998-01-01 03:46:22 C 02 45 01.32 -00 28 44.2 z 711
1998-01-01 04:06:58 C 02 45 00.09 -00 28 41.8 z 711
1998-01-02 04:38:19 C 02 43 43.63 -00 25 44.7 z 711
2000-12-20 02:20:49 C 00 23 54.65 -03 18 02.3 696
2000-12-20 02:24:37 C 00 23 55.05 -03 18 01.2 696
2000-12-20 02:33:35 C 00 23 55.81 -03 17 55.3 696
2004-09-20 14:10:45 C 06 56 02.76 +23 07 05.7 o 568
2004-09-20 14:15:05 C 06 56 02.91 +23 07 03.8 o 568
2004-11-22 00:43:46 C 06 35 33.13 +08 16 36.0 o 084
2004-12-05 02:56:03 C 05 40 17.29 +03 12 49.2 c 844
2004-12-05 02:57:32 C 05 40 17.01 +03 12 48.6 c 844
Radar Observations (7)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2014-10-20 07:40:00 166355.453 2 Hz 8560 -14 -14
2014-10-20 08:35:00 41303.3259 1 Hz 2380 -1 -1
2014-10-20 08:40:00 49250902.97 3 us 8560 -14 -14
2014-10-20 10:20:00 49138106.93 0.3 us 2380 -1 -1
2014-10-21 07:36:00 17315.52 0.5 Hz 2380 -1 -1
2014-10-21 08:00:00 48261871.2 0.2 us 2380 -1 -1
2014-10-22 09:00:00 48227416.89 2 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)