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
2019-01-01 00:44:39 s 1 -81918.974 0 +381212.30 5580.0 C57
2019-01-02 10:43:48 C 06 12 12.29 -17 58 55.3 V T05
2019-01-02 10:57:45 C 06 12 07.41 -17 59 24.4 V T05
2019-01-02 11:10:58 C 06 12 02.79 -17 59 52.5 V T05
2019-01-02 11:24:16 C 06 11 58.15 -18 00 20.2 V T05
2019-01-03 09:44:38 S 06 02 42.058 -18 52 59.59 V C57
2019-01-03 09:44:38 s 1 -165226.45 0 +296130.66 9260.0 C57
2019-01-03 10:14:38 S 06 02 31.392 -18 53 58.02 V C57
2019-01-03 10:14:38 s 1 -165735.78 8 +294884.47 5650.0 C57
2019-01-03 12:44:38 S 06 01 36.761 -18 58 31.51 V C57
2019-01-03 12:44:38 s 1 -168201.66 8 +288513.73 8510.0 C57
2019-01-03 16:14:38 S 06 00 20.592 -19 05 06.50 V C57
2019-01-03 16:14:38 s 1 -171417.85 6 +279198.82 7040.0 C57
2019-01-03 17:44:38 S 05 59 47.314 -19 07 49.66 V C57
2019-01-03 17:44:38 s 1 -172707.66 8 +275063.47 7710.0 C57
2019-01-03 18:14:38 S 05 59 36.053 -19 08 47.83 V C57
2019-01-03 18:14:38 s 1 -173125.35 8 +273665.74 7190.0 C57
2019-01-03 19:44:38 S 05 59 02.820 -19 11 37.90 V C57
2019-01-03 19:44:38 s 1 -174340.80 5 +269414.28 8910.0 C57
2019-01-03 20:44:38 S 05 58 40.646 -19 13 24.02 V C57
2019-01-03 20:44:38 s 1 -175119.09 9 +266531.17 4450.0 C57
2019-01-03 21:44:38 S 05 58 18.468 -19 15 21.13 V C57
2019-01-03 21:44:38 s 1 -175871.16 4 +263608.73 6300.0 C57
2019-01-04 00:14:38 S 05 57 24.187 -19 19 41.20 V C57
2019-01-04 00:14:38 s 1 -177632.89 0 +256129.10 3400.0 C57
2019-01-04 01:44:38 S 05 56 51.857 -19 22 29.42 V C57
2019-01-04 01:44:38 s 1 -178605.76 9 +251521.11 8570.0 C57
2019-01-04 10:20:31 C 05 55 39.35 -19 38 22.9 V T08
2019-01-04 10:33:49 C 05 55 34.36 -19 38 49.6 V T08
2019-01-04 10:47:48 C 05 55 29.07 -19 39 18.3 V T08
2019-01-04 11:01:04 C 05 55 24.05 -19 39 44.6 V T08
2019-01-04 15:44:38 S 05 51 44.705 -19 47 22.49 V C57
2019-01-04 15:44:38 s 1 -184192.72 7 +203992.07 4340.0 C57
2019-01-04 17:14:38 S 05 51 10.822 -19 50 03.62 V C57
2019-01-04 17:14:38 s 1 -184363.08 7 +198396.11 5890.0 C57
2019-01-05 00:44:38 S 05 48 24.785 -20 03 18.83 V C57
2019-01-05 00:44:38 s 1 -183704.31 6 +168872.48 9340.0 C57
2019-01-05 07:49:37 C 05 47 45.99 -20 21 47.8 V G96
2019-01-05 07:57:40 C 05 47 42.88 -20 22 03.5 V G96
2019-01-05 08:05:44 C 05 47 39.77 -20 22 18.9 V G96
2019-01-05 08:13:49 C 05 47 36.80 -20 22 35.4 V G96
2019-01-06 03:44:38 S 05 38 37.003 -20 50 03.23 V C57
2019-01-06 03:44:38 s 1 -149982.16 3 +39882.481 7680.0 C57
2019-01-06 07:44:38 S 05 37 13.632 -20 57 14.26 V C57
2019-01-06 07:44:38 s 1 -138199.61 2 +17918.447 890.0 C57
2019-01-06 08:14:38 S 05 37 03.355 -20 58 05.81 V C57
2019-01-06 08:14:38 s 1 -136535.86 1 +15140.813 9430.0 C57
2019-01-06 08:44:38 S 05 36 53.390 -20 58 50.84 V C57
2019-01-06 08:44:38 s 1 -134825.84 4 +12358.090 5550.0 C57
2019-01-06 11:44:38 S 05 35 53.762 -21 04 15.42 V C57
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)