4486 Mithra (1987 SB)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6600236478 ± 3.90e-09
Semi-major axis (a)2.2063115570 AU ± 2.53e-10
Inclination (i)3.03084250° ± 6.74e-07
Long. of Asc. Node (Ω)82.17778661° ± 1.96e-05
Arg. of Perihelion (ω)169.26389886° ± 1.94e-05
Mean Anomaly (M)276.29053215° ± 7.31e-07
Mean Motion (n)0.3007544184°/day ± 5.17e-11
Perihelion dist (q)0.75009376 AU ± 8.60e-09
Aphelion dist (Q)3.66252936 AU ± 8.61e-09
Orbital Period3.27717973 yr ± 5.63e-10
Physical Parameters
H (abs. magnitude)15.62
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.261″
Uncertainty0
Orbit TypeApollo
MOID0.045963 AU
Observations Used1918
Radar Obs Used17
Oppositions18
Arc Total1974-2026
First Observation Used1974-02-16
Last Observation Used2026-04-05
Radar Observations (17)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2000-07-22 18:05:00 308651.4 0.2 Hz 2380 -1 -1
2000-07-23 17:50:00 305844.3 0.1 Hz 2380 -1 -1
2000-07-23 18:13:00 231715700.7 8 us 2380 -1 -1
2000-07-25 17:34:00 299684.19 0.1 Hz 2380 -1 -1
2000-07-25 18:19:00 209790774 4 us 2380 -1 -1
2000-07-28 17:29:00 289516.29 0.1 Hz 2380 -1 -1
2000-07-28 18:48:00 177651746 4 us 2380 -1 -1
2000-08-06 18:50:00 880268.1 0.2 Hz 8560 -14 -14
2000-08-06 22:00:00 88558989.2 1.5 us 8560 -14 -14
2000-08-06 23:20:00 88079929.4 4 us 8560 -14 -14
2000-08-06 23:20:00 850271 0.12 Hz 8560 -14 -14
2000-08-07 20:00:00 80710724.9 3 us 8560 -14 -14
2000-08-07 20:00:00 831592.85 0.24 Hz 8560 -14 -14
2000-08-08 19:00:00 72927221.7 2 us 8560 -14 -14
2000-08-08 19:00:00 785781.83 0.4 Hz 8560 -14 -14
2000-08-09 21:40:00 64612277 6 us 8560 -14 -14
2000-08-09 21:40:00 692491.48 0.48 Hz 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)