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
2022-04-06 05:32:58 C 14 37 09.278 -12 31 21.97 V W68
2022-04-06 05:35:34 C 14 37 08.954 -12 31 24.71 V W68
2022-04-06 05:44:40 C 14 37 07.814 -12 31 34.28 V W68
2022-04-06 05:58:23 C 14 37 06.084 -12 31 48.68 V W68
2022-04-06 08:12:34 C 14 36 50.375 -12 34 40.15 V G96
2022-04-06 08:20:46 C 14 36 49.338 -12 34 48.86 V G96
2022-04-06 08:28:58 C 14 36 48.298 -12 34 57.54 V G96
2022-04-06 08:37:11 C 14 36 47.257 -12 35 06.22 V G96
2022-04-06 09:45:36 C 14 36 38.585 -12 36 17.82 V 703
2022-04-06 09:53:08 C 14 36 37.631 -12 36 25.85 V 703
2022-04-06 10:00:40 C 14 36 36.673 -12 36 33.70 V 703
2022-04-06 10:08:13 C 14 36 35.716 -12 36 41.65 V 703
2022-04-08 16:19:22 C 14 29 45.115 -13 34 41.77 V P07
2022-04-08 16:19:50 C 14 29 45.046 -13 34 42.24 V P07
2022-04-08 17:25:30 C 14 29 35.659 -13 35 55.18 V P07
2022-04-08 17:44:20 C 14 29 32.959 -13 36 16.13 V P07
2022-04-08 18:28:29 C 14 29 26.623 -13 37 04.91 V P07
2022-04-08 19:32:05 C 14 29 17.506 -13 38 14.82 V P07
2022-04-08 19:35:22 C 14 29 17.033 -13 38 18.31 V P07
2022-04-09 09:36:35 C 14 27 22.216 -13 54 24.44 V 703
2022-04-09 09:44:20 C 14 27 21.089 -13 54 33.52 V 703
2022-04-09 09:52:05 C 14 27 19.948 -13 54 41.69 V 703
2022-04-09 09:59:49 C 14 27 18.810 -13 54 50.33 V 703
2022-04-09 16:17:53 C 14 26 27.257 -14 01 27.66 V P07
2022-04-09 17:27:59 C 14 26 16.740 -14 02 47.08 V P07
2022-04-09 18:26:56 C 14 26 07.877 -14 03 53.24 V P07
2022-04-09 19:49:21 C 14 25 55.507 -14 05 25.58 V P07
2022-04-10 04:52:58 C 14 24 39.355 -14 15 38.45 V W68
2022-04-10 04:55:34 C 14 24 38.962 -14 15 41.40 V W68
2022-04-10 05:00:07 C 14 24 38.268 -14 15 46.62 V W68
2022-04-10 05:15:04 C 14 24 35.986 -14 16 03.79 V W68
2022-04-10 10:42:49 C 14 23 48.517 -14 22 45.43 U F52
2022-04-10 11:00:10 C 14 23 45.818 -14 23 05.37 U F52
2022-04-10 11:17:30 C 14 23 43.132 -14 23 25.27 U F52
2022-04-10 11:34:48 C 14 23 40.440 -14 23 45.07 U F52
2022-04-10 14:27:42 C 14 23 14.57 -14 26 30.5 q E89
2022-04-10 14:32:58 C 14 23 13.77 -14 26 36.3 q E89
2022-04-10 14:35:01 C 14 23 13.45 -14 26 38.9 q E89
2022-04-10 14:37:08 C 14 23 13.12 -14 26 41.3 q E89
2022-04-10 14:58:16 C 14 23 11.902 -14 27 13.50 V P07
2022-04-10 16:06:24 C 14 23 01.310 -14 28 32.81 V P07
2022-04-10 17:09:50 C 14 22 51.370 -14 29 46.03 V P07
2022-04-10 18:07:24 C 14 22 42.310 -14 30 52.27 V P07
2022-04-10 18:08:00 C 14 22 42.235 -14 30 52.88 V P07
2022-04-12 02:38:11 C 14 17 45.64 -15 08 40.3 q Y00
2022-04-12 02:40:49 C 14 17 45.18 -15 08 43.5 q Y00
2022-04-12 02:43:01 C 14 17 44.75 -15 08 46.4 q Y00
2022-04-12 06:11:34 C 14 17 10.932 -15 12 45.90 V W68
2022-04-12 06:15:37 C 14 17 10.258 -15 12 50.65 V W68
2022-04-12 06:23:42 C 14 17 08.909 -15 13 00.05 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)