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
1976-10-22 06:40:00 A 23 21 38.20 +20 01 25.4 12.5 675
1976-10-22 06:45:00 A 23 21 44.72 +19 58 39.7 675
1976-10-25 05:10:00 A 00 02 29.05 +02 32 56.7 675
1976-10-25 05:12:00 A 00 02 29.44 +02 32 40.7 675
1976-10-25 05:35:59 A 00 02 33.32 +02 30 19.9 675
1976-10-25 19:02:04 A 00 05 14.65 +01 19 28.7 13.0 095
1976-10-26 02:51:59 A 00 06 39.36 +00 45 41.4 675
1976-10-26 03:18:30 A 00 06 42.45 +00 43 52.9 675
1976-10-26 08:05:59 A 00 07 13.12 +00 24 51.8 675
1976-10-26 10:05:30 A 00 07 27.53 +00 17 15.4 675
1976-10-26 19:53:28 A 00 08 55.34 -00 16 39.0 14.5 095
1976-10-27 03:56:59 A 00 09 59.65 -00 41 18.7 675
1976-10-27 04:15:44 A 00 10 00.92 -00 42 06.5 675
1976-10-27 04:52:13 A 00 09 56.94 -00 44 14.4 A 801
1976-10-27 07:57:00 A 00 10 17.13 -00 52 30.2 675
1976-10-27 19:36:21 A 00 11 35.46 -01 22 57.0 15.0 095
1976-10-28 02:26:38 A 00 12 14.21 -01 35 31.5 809
1976-10-28 02:36:37 A 00 12 14.73 -01 35 53.0 809
1976-10-28 07:39:59 A 00 12 36.99 -01 49 13.4 693
1976-10-28 08:05:59 A 00 12 38.60 -01 50 06.9 693
1976-10-28 10:00:01 A 00 12 59.47 -01 54 05.3 371
1976-10-28 10:06:00 A 00 12 59.84 -01 54 17.4 371
1976-10-28 13:41:59 A 00 13 13.69 -01 58 50.6 323
1976-10-29 01:28:58 A 00 14 10.14 -02 23 04.3 A 801
1976-10-29 05:24:00 A 00 14 25.34 -02 29 27.9 688
1976-10-29 05:42:11 A 00 14 21.26 -02 27 33.3 809
1976-10-29 05:54:09 A 00 14 21.83 -02 27 52.1 809
1976-10-29 05:57:00 A 00 14 26.69 -02 30 18.4 688
1976-10-29 08:41:20 A 00 14 42.27 -02 32 13.9 485
1976-10-29 09:43:22 A 00 14 45.65 -02 33 49.0 485
1976-10-29 15:17:00 A 00 15 04.86 -02 42 29.8 323
1976-10-29 17:03:59 A 00 15 09.92 -02 45 06.1 323
1976-10-30 04:19:27 A 00 15 54.31 -03 00 46.7 809
1976-10-30 04:29:26 A 00 15 54.72 -03 00 59.3 809
1976-10-30 04:46:37 A 00 15 55.25 -03 01 20.8 809
1976-10-30 04:56:36 A 00 15 55.69 -03 01 33.7 809
1976-10-30 07:47:00 A 00 16 06.02 -03 07 10.9 16.8 693
1976-10-30 08:21:00 A 00 16 07.46 -03 07 52.2 693
1976-10-30 09:37:22 A 00 16 17.72 -03 07 13.3 485
1976-10-30 10:43:47 A 00 16 20.40 -03 08 34.5 485
1976-10-30 21:55:56 A 00 16 55.32 -03 23 51.7 16.0 095
1976-10-30 22:05:27 A 00 16 56.43 -03 24 13.6 16.0 095
1976-10-31 01:43:57 A 00 17 13.06 -03 26 09.7 809
1976-10-31 01:53:55 A 00 17 13.41 -03 26 18.3 809
1976-11-01 02:21:53 A 00 18 27.41 -03 49 45.5 809
1976-11-01 02:29:52 A 00 18 27.60 -03 49 52.6 809
1976-11-11 01:11:40 A 00 27 08.26 -05 15 12.2 809
1976-11-12 00:34:50 A 00 27 53.71 -05 16 27.5 809
1976-11-17 01:14:19 A 00 31 50.30 -05 13 34.5 A 801
1976-11-27 02:41:15 A 00 40 43.89 -04 32 08.9 695
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)