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
2005-01-14 20:13:50 C 02 57 54.62 -02 37 32.0 r 240
2005-01-14 20:20:19 C 02 57 54.14 -02 37 30.4 r 240
2005-01-14 20:26:47 C 02 57 53.70 -02 37 28.9 r 240
2007-10-27 12:10:10 C 21 03 50.996 -13 42 12.28 r E12
2007-10-27 12:15:20 C 21 03 55.566 -13 42 08.61 r E12
2007-10-30 19:28:23 C 22 01 16.98 -12 38 40.3 c J46
2007-11-01 01:59:15 C 22 17 11.21 -12 11 32.6 w 699
2007-11-01 02:24:05 C 22 17 22.55 -12 11 11.0 w 699
2007-11-01 02:48:55 C 22 17 33.87 -12 10 49.6 w 699
2007-11-01 03:13:48 C 22 17 45.23 -12 10 27.7 w 699
2007-11-03 03:07:11 C 22 37 50.04 -11 29 57.9 r H06
2007-11-03 03:14:03 C 22 37 52.46 -11 29 52.6 r H06
2007-11-03 03:20:56 C 22 37 54.86 -11 29 46.7 r H06
2007-11-03 03:27:48 C 22 37 57.32 -11 29 40.8 r H06
2007-11-04 03:32:04 C 22 46 20.76 -11 10 43.6 18.7 c 704
2007-11-04 03:49:45 C 22 46 26.25 -11 10 29.7 17.9 c 704
2007-11-04 04:07:38 C 22 46 31.87 -11 10 15.4 18.0 c 704
2007-11-04 04:25:28 C 22 46 37.42 -11 10 01.4 18.1 c 704
2007-11-11 03:30:09 C 23 26 12.40 -09 21 00.0 r 703
2007-11-11 03:39:36 C 23 26 13.95 -09 20 54.1 r 703
2007-11-11 03:49:05 C 23 26 15.43 -09 20 49.3 r 703
2007-11-11 03:58:34 C 23 26 16.94 -09 20 43.5 r 703
2007-11-12 03:08:20 C 23 30 09.65 -09 07 55.8 18.7 c 704
2007-11-12 03:25:47 C 23 30 12.27 -09 07 46.1 18.6 c 704
2007-11-12 03:43:19 C 23 30 14.95 -09 07 36.5 18.6 c 704
2007-11-12 04:00:51 C 23 30 17.54 -09 07 26.9 18.7 c 704
2007-11-12 04:18:19 C 23 30 20.16 -09 07 17.3 18.6 c 704
2007-11-17 01:47:30 C 23 46 42.52 -08 07 21.6 r 703
2007-11-17 01:58:17 C 23 46 43.71 -08 07 16.7 r 703
2007-11-17 02:09:05 C 23 46 44.90 -08 07 12.7 r 703
2007-11-17 02:19:54 C 23 46 46.12 -08 07 07.2 r 703
2007-11-18 19:17:25 C 23 51 31.67 -07 47 44.8 r 240
2007-11-18 19:22:16 C 23 51 32.19 -07 47 42.5 r 240
2007-11-18 19:25:53 C 23 51 32.56 -07 47 40.9 r 240
2007-11-18 19:33:09 C 23 51 33.33 -07 47 37.7 r 240
2011-11-26 08:04:57 C 07 21 19.75 +06 41 52.7 o 807
2011-11-26 08:09:09 C 07 21 19.37 +06 41 48.7 o 807
2011-11-26 08:13:18 C 07 21 19.00 +06 41 44.9 o 807
2011-11-26 08:17:27 C 07 21 18.65 +06 41 41.4 o 807
2011-11-26 08:21:35 C 07 21 18.29 +06 41 37.1 o 807
2011-11-26 08:29:55 C 07 21 17.59 +06 41 29.8 o 807
2011-11-26 08:34:03 C 07 21 17.22 +06 41 25.5 o 807
2011-12-28 20:22:24 C 04 56 15.59 -06 49 17.4 u C27
2012-01-02 04:43:45 C 04 30 05.00 -07 53 07.9 r 703
2012-01-02 04:58:23 C 04 30 01.26 -07 53 15.1 r 703
2012-01-02 05:27:57 C 04 29 53.77 -07 53 30.0 r 703
2012-01-18 02:12:27 C 03 14 03.24 -08 51 05.8 G47
2012-01-18 03:25:50 C 03 13 51.37 -08 50 59.4 G47
2012-01-18 03:53:40 C 03 13 46.92 -08 50 53.9 19.7 c 704
2012-01-18 04:12:33 C 03 13 43.87 -08 50 52.6 19.7 c 704
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)