4544 Xanthus (1989 FB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2501386666 ± 9.43e-09
Semi-major axis (a)1.0420242968 AU ± 2.10e-10
Inclination (i)14.14293362° ± 1.06e-06
Long. of Asc. Node (Ω)23.93544276° ± 2.72e-06
Arg. of Perihelion (ω)333.83833488° ± 3.84e-06
Mean Anomaly (M)5.13929800° ± 3.64e-06
Mean Motion (n)0.9266068532°/day ± 2.81e-10
Perihelion dist (q)0.78137373 AU ± 9.82e-09
Aphelion dist (Q)1.30267486 AU ± 9.83e-09
Orbital Period1.06369414 yr ± 3.22e-10
Physical Parameters
H (abs. magnitude)17.39
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.282″
Uncertainty0
Orbit TypeApollo
MOID0.174208 AU
Observations Used2767
Radar Obs Used1
Oppositions1
Arc Total1989-2026
First Observation Used1989-03-30
Last Observation Used2026-02-18
Observations (3156)
Date Type RA Dec Mag Band Observatory
2022-05-10 02:36:56 C 11 56 29.789 -26 35 47.58 V W68
2022-05-10 04:18:53 C 11 56 10.248 -26 37 21.97 V 703
2022-05-10 04:34:20 C 11 56 06.968 -26 37 31.73 V 703
2022-05-10 04:42:03 C 11 56 05.392 -26 37 35.47 V 703
2022-05-11 03:12:19 C 11 51 41.033 -26 49 42.10 V W68
2022-05-11 03:17:18 C 11 51 40.027 -26 49 44.65 V W68
2022-05-11 03:26:33 C 11 51 38.158 -26 49 49.44 V W68
2022-05-11 03:43:39 C 11 51 34.706 -26 49 58.30 V W68
2022-05-15 02:12:34 C 11 34 26.666 -27 36 46.08 V W68
2022-05-15 02:19:45 C 11 34 25.385 -27 36 49.25 V W68
2022-05-15 02:24:59 C 11 34 24.451 -27 36 51.37 V W68
2022-05-15 02:40:23 C 11 34 21.677 -27 36 57.85 V W68
2022-05-18 02:40:02 C 11 22 44.635 -28 06 47.09 V W68
2022-05-18 02:44:46 C 11 22 43.862 -28 06 48.85 V W68
2022-05-18 02:52:27 C 11 22 42.638 -28 06 51.34 V W68
2022-05-18 03:10:11 C 11 22 39.794 -28 06 57.60 V W68
2022-05-23 07:49:58 C 11 05 28.60 -28 50 38.5 q E89
2022-05-23 07:58:10 C 11 05 27.52 -28 50 41.2 q E89
2022-05-23 08:06:23 C 11 05 26.44 -28 50 44.3 q E89
2022-05-23 08:14:37 C 11 05 25.32 -28 50 46.3 q E89
2022-05-26 00:42:55 C 10 57 52.358 -29 11 04.16 V W68
2022-05-26 00:46:50 C 10 57 51.878 -29 11 05.17 V W68
2022-05-26 00:56:41 C 10 57 50.707 -29 11 08.02 V W68
2022-05-26 01:18:15 C 10 57 48.144 -29 11 14.03 V W68
2022-05-26 22:05:14 S 10 55 33.314 -29 17 33.54 L C51
2022-05-27 01:13:00 S 10 55 13.390 -29 18 30.10 L C51
2022-05-27 01:13:11 S 10 55 13.375 -29 18 31.32 L C51
2022-05-27 01:39:03 C 10 55 10.310 -29 18 37.69 V W68
2022-05-27 01:43:28 C 10 55 09.816 -29 18 38.92 V W68
2022-05-27 01:51:30 C 10 55 08.902 -29 18 41.04 V W68
2022-05-27 02:10:45 C 10 55 06.734 -29 18 46.08 V W68
2022-05-27 04:20:13 S 10 54 53.69 -29 19 24.4 L C51
2022-05-27 04:20:24 S 10 54 53.65 -29 19 25.5 L C51
2022-05-27 05:55:01 S 10 54 43.76 -29 19 55.7 L C51
2022-05-27 07:28:54 S 10 54 33.94 -29 20 23.8 L C51
2022-05-27 09:02:47 S 10 54 24.142 -29 20 51.83 L C51
2022-05-27 09:02:58 S 10 54 24.122 -29 20 52.37 L C51
2022-05-27 12:10:00 S 10 54 04.72 -29 21 46.6 L C51
2022-05-27 15:18:41 S 10 53 45.22 -29 22 45.4 L C51
2022-06-07 00:20:00 C 10 33 08.340 -30 38 12.23 V W68
2022-06-07 00:25:17 C 10 33 07.949 -30 38 13.81 V W68
2022-06-07 00:32:27 C 10 33 07.430 -30 38 15.65 V W68
2022-06-07 00:47:31 C 10 33 06.331 -30 38 19.82 V W68
2022-06-07 23:09:17 C 10 31 40.063 -30 45 26.06 V W68
2022-06-07 23:14:39 C 10 31 39.703 -30 45 27.76 V W68
2022-06-07 23:25:22 C 10 31 38.923 -30 45 31.03 V W68
2022-06-07 23:40:16 C 10 31 37.843 -30 45 35.42 V W68
2022-06-15 01:14:54 C 10 22 00.662 -31 40 51.31 V W68
2022-06-15 01:20:00 C 10 22 00.350 -31 40 52.97 V W68
2022-06-15 01:27:51 C 10 21 59.971 -31 40 54.66 V W68
Radar Observations (2)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1990-11-19 17:00:00 -11375 1 Hz 2380 -1 -1
1990-11-19.708333 -1137500 100 Hz 2380 251 251
Station codes
-1 Arecibo (305-m, 1963–2020)