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
2021-11-03 13:33:57 s 1 -138537.09 7 +265864.20 370.0 C57
2021-11-03 13:35:12 C 04 52 30.54 +12 26 27.9 V T08
2021-11-03 13:43:57 S 04 50 25.135 +12 25 29.35 V C57
2021-11-03 13:43:57 s 1 -138777.90 1 +265356.10 4270.0 C57
2021-11-03 13:50:31 C 04 52 25.12 +12 26 01.9 V T08
2021-11-03 13:53:57 S 04 50 21.228 +12 25 07.90 V C57
2021-11-03 13:53:57 s 1 -139017.98 3 +264846.64 5470.0 C57
2021-11-03 14:03:57 S 04 50 18.168 +12 24 52.09 V C57
2021-11-03 14:03:57 s 1 -139257.34 1 +264335.82 3950.0 C57
2021-11-03 14:13:57 S 04 50 15.151 +12 24 38.70 V C57
2021-11-03 14:13:57 s 1 -139495.97 1 +263823.64 9710.0 C57
2021-11-03 14:23:57 S 04 50 11.237 +12 24 18.22 V C57
2021-11-03 14:23:57 s 1 -139733.86 9 +263310.10 2720.0 C57
2021-11-03 14:33:57 S 04 50 08.400 +12 23 58.60 V C57
2021-11-03 14:33:57 s 1 -139971.03 2 +262795.19 2980.0 C57
2021-11-03 14:43:57 S 04 50 04.682 +12 23 35.95 V C57
2021-11-03 14:43:57 s 1 -140207.45 6 +262278.92 480.0 C57
2021-11-03 14:53:57 S 04 50 01.205 +12 23 20.26 V C57
2021-11-03 14:53:57 s 1 -140443.13 8 +261761.27 5190.0 C57
2021-11-03 15:03:57 S 04 49 57.626 +12 22 59.38 V C57
2021-11-03 15:03:57 s 1 -140678.07 4 +261242.26 7120.0 C57
2021-11-03 15:13:57 S 04 49 54.125 +12 22 37.52 V C57
2021-11-03 15:13:57 s 1 -140912.26 1 +260721.87 6230.0 C57
2021-11-03 15:23:57 S 04 49 50.189 +12 22 21.72 V C57
2021-11-03 15:23:57 s 1 -141145.69 5 +260200.11 2530.0 C57
2021-11-03 15:33:57 S 04 49 47.335 +12 22 06.56 V C57
2021-11-03 15:33:57 s 1 -141378.37 2 +259676.97 6000.0 C57
2021-11-03 15:43:57 S 04 49 43.946 +12 21 41.94 V C57
2021-11-03 15:43:57 s 1 -141610.28 9 +259152.46 6620.0 C57
2021-11-03 15:53:57 S 04 49 40.968 +12 21 27.90 V C57
2021-11-03 15:53:57 s 1 -141841.44 1 +258626.56 4380.0 C57
2021-11-03 16:03:57 S 04 49 36.869 +12 21 05.26 V C57
2021-11-03 16:03:57 s 1 -142071.82 6 +258099.29 9270.0 C57
2021-11-03 16:13:57 S 04 49 34.010 +12 20 46.57 V C57
2021-11-03 16:13:57 s 1 -142301.44 0 +257570.63 1270.0 C57
2021-11-03 16:23:57 S 04 49 30.216 +12 20 28.57 V C57
2021-11-03 16:23:57 s 1 -142530.27 8 +257040.59 370.0 C57
2021-11-03 16:53:57 S 04 49 19.776 +12 19 33.56 V C57
2021-11-03 16:53:57 s 1 -143212.10 3 +255442.15 140.0 C57
2021-11-03 17:03:57 S 04 49 16.346 +12 19 11.50 V C57
2021-11-03 17:03:57 s 1 -143437.80 3 +254906.55 7510.0 C57
2021-11-03 17:13:57 S 04 49 12.845 +12 18 49.46 V C57
2021-11-03 17:13:57 s 1 -143662.70 8 +254369.56 1900.0 C57
2021-11-03 17:23:57 S 04 49 09.600 +12 18 26.64 V C57
2021-11-03 17:23:57 s 1 -143886.81 4 +253831.18 3320.0 C57
2021-11-03 17:33:57 S 04 49 06.005 +12 18 17.35 V C57
2021-11-03 17:33:57 s 1 -144110.11 9 +253291.40 1730.0 C57
2021-11-03 17:43:44 C 04 51 08.458 +12 20 03.01 V P07
2021-11-03 17:43:57 S 04 49 02.712 +12 17 57.05 V C57
2021-11-03 17:43:57 s 1 -144332.61 8 +252750.22 7130.0 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)