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
2024-04-04 07:31:09 C 09 11 47.734 +35 01 18.55 V T05
2024-04-04 08:33:17 C 09 11 48.048 +34 59 50.64 V T05
2024-04-04 08:55:18 C 09 11 48.137 +34 59 18.96 V T05
2024-04-07 03:48:55 S 09 12 43.27 +33 26 32.2 L C51
2024-04-07 17:42:30 S 09 12 57.90 +33 07 32.2 L C51
2024-04-07 19:01:51 B 09 12 59.467 +33 05 43.30 q L47
2024-04-07 19:13:10 B 09 12 59.635 +33 05 27.38 q L47
2024-04-07 19:14:54 S 09 12 59.78 +33 05 27.5 L C51
2024-04-07 19:24:29 B 09 12 59.676 +33 05 11.11 q L47
2024-04-08 05:20:05 C 09 13 10.448 +32 51 45.65 V 703
2024-04-08 05:23:21 C 09 13 10.495 +32 51 40.50 V 703
2024-04-08 05:26:37 C 09 13 10.560 +32 51 37.04 V 703
2024-04-08 05:29:54 C 09 13 10.592 +32 51 32.00 V 703
2024-04-08 06:02:56 S 09 13 11.97 +32 50 47.6 L C51
2024-04-08 08:54:49 C 09 13 14.458 +32 46 57.50 X F51
2024-04-08 09:07:56 S 09 13 15.59 +32 46 36.9 L C51
2024-04-08 09:27:02 C 09 13 14.963 +32 46 13.21 X F51
2024-04-08 09:43:15 C 09 13 15.225 +32 45 50.84 X F51
2024-04-10 07:46:09 C 09 14 15.900 +31 44 10.36 V T05
2024-04-10 08:06:43 C 09 14 16.296 +31 43 42.89 V T05
2024-04-10 08:35:20 C 09 14 16.853 +31 43 04.44 V T05
2024-04-11 05:24:57 C 09 14 47.836 +31 15 29.38 V 703
2024-04-11 05:28:13 C 09 14 47.911 +31 15 25.31 V 703
2024-04-11 05:31:31 C 09 14 47.954 +31 15 20.41 V 703
2024-04-11 05:34:47 C 09 14 48.073 +31 15 16.45 V 703
2024-04-13 05:22:17 C 09 16 06.913 +30 12 58.14 V 703
2024-04-13 05:28:50 C 09 16 07.140 +30 12 48.82 V 703
2024-04-13 05:32:06 C 09 16 07.237 +30 12 45.86 V 703
2024-04-13 20:20:28 C 09 16 34.152 +29 53 36.38 Z C23
2024-04-13 20:23:41 C 09 16 34.272 +29 53 31.70 Z C23
2024-04-15 04:51:29 C 09 17 35.452 +29 12 10.69 V 703
2024-04-15 04:54:30 C 09 17 35.538 +29 12 06.84 V 703
2024-04-15 04:57:30 C 09 17 35.664 +29 12 03.06 V 703
2024-04-15 05:00:30 C 09 17 35.675 +29 11 59.28 V 703
2024-04-21 06:44:47 C 09 23 01.994 +26 12 20.84 V T05
2024-04-21 06:50:23 C 09 23 02.213 +26 12 13.82 V T05
2024-04-21 06:58:26 C 09 23 02.530 +26 12 03.85 V T05
2024-04-21 07:13:40 C 09 23 03.058 +26 11 45.74 V T05
2024-04-22 04:37:16 C 09 23 57.005 +25 46 08.44 V G96
2024-04-22 04:45:25 C 09 23 57.332 +25 45 58.68 V G96
2024-04-22 04:53:33 C 09 23 57.649 +25 45 48.92 V G96
2024-04-22 05:01:43 C 09 23 57.980 +25 45 38.99 V G96
2024-04-22 22:33:55 B 09 24 43.279 +25 24 47.53 Z Y89
2024-04-22 22:45:26 B 09 24 43.729 +25 24 34.50 Z Y89
2024-04-22 22:56:57 B 09 24 44.231 +25 24 20.67 Z Y89
2024-04-26 05:07:02 C 09 28 16.939 +23 53 10.97 V 703
2024-04-26 05:10:18 C 09 28 17.087 +23 53 06.29 V 703
2024-04-26 05:13:35 C 09 28 17.152 +23 53 01.97 V 703
2024-04-26 05:16:51 C 09 28 17.418 +23 52 58.73 V 703
2024-04-26 08:06:38 C 09 28 25.368 +23 49 46.42 V T05
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)