363027 (1998 ST27)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5297679948 ± 2.00e+00
Semi-major axis (a)0.8198152879 AU ± 3.00e+00
Inclination (i)21.05065934° ± 4.00e+00
Long. of Asc. Node (Ω)197.51457964° ± 5.00e+00
Arg. of Perihelion (ω)322.43883834° ± 6.00e+00
Mean Anomaly (M)88.40523181° ± 9.78e-06
Mean Motion (n)1.3278170992°/day ± 7.29e+00
Perihelion dist (q)0.38550339 AU ± 2.16e+00
Aphelion dist (Q)1.25412719 AU ± 4.87e+00
Orbital Period0.74229070 yr ± 4.07e+00
NGA Modelr2
A21.74180921e-06 AU/d²
Physical Parameters
H (abs. magnitude)19.58
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.474″
Uncertainty0
Orbit TypeAten
MOID0.009115 AU
Observations Used934
Oppositions9
Arc Total1998-2024
First Observation Used1998-09-24
Last Observation Used2024-10-14
Observations (1124)
Date Type RA Dec Mag Band Observatory
2024-10-08 06:26:40 C 00 37 16.741 +26 45 27.07 V 703
2024-10-08 06:29:59 C 00 37 13.620 +26 44 46.07 V 703
2024-10-08 18:11:45 C 00 26 12.71 +24 02 22.5 X G02
2024-10-08 18:18:28 C 00 26 03.57 +24 01 09.7 V C40
2024-10-08 18:18:42 C 00 26 05.41 +24 00 37.8 X G02
2024-10-08 18:20:16 C 00 26 01.66 +24 00 42.5 V C40
2024-10-08 18:22:04 C 00 25 59.74 +24 00 15.3 V C40
2024-10-08 18:23:53 C 00 25 57.81 +23 59 47.9 V C40
2024-10-08 18:25:24 C 00 25 58.38 +23 58 56.3 X G02
2024-10-08 18:25:42 C 00 25 55.88 +23 59 20.4 V C40
2024-10-08 18:27:30 C 00 25 53.96 +23 58 53.1 V C40
2024-10-08 18:29:18 C 00 25 52.04 +23 58 25.8 V C40
2024-10-08 18:31:06 C 00 25 50.12 +23 57 58.5 V C40
2024-10-08 18:32:53 C 00 25 48.20 +23 57 31.2 V C40
2024-10-08 18:34:42 C 00 25 46.27 +23 57 03.7 V C40
2024-10-08 18:36:29 C 00 25 44.36 +23 56 36.5 V C40
2024-10-08 18:38:16 C 00 25 42.44 +23 56 09.4 V C40
2024-10-08 18:58:26 C 00 25 20.81 +23 51 01.5 V C40
2024-10-08 19:00:14 C 00 25 18.87 +23 50 33.9 V C40
2024-10-08 19:02:02 C 00 25 16.93 +23 50 06.1 V C40
2024-10-08 19:03:50 C 00 25 14.98 +23 49 38.4 V C40
2024-10-08 19:05:37 C 00 25 13.06 +23 49 11.0 V C40
2024-10-08 19:07:25 C 00 25 11.12 +23 48 43.3 V C40
2024-10-08 19:09:14 C 00 25 09.17 +23 48 15.5 V C40
2024-10-08 19:11:01 C 00 25 07.23 +23 47 47.9 V C40
2024-10-08 19:12:48 C 00 25 05.30 +23 47 20.4 V C40
2024-10-08 19:14:36 C 00 25 03.35 +23 46 52.7 V C40
2024-10-08 19:16:24 C 00 25 01.41 +23 46 25.0 V C40
2024-10-08 19:18:12 C 00 24 59.46 +23 45 57.1 V C40
2024-10-08 19:27:35 B 00 24 55.453 +23 47 17.85 Z M49
2024-10-08 19:43:55 B 00 24 37.649 +23 43 06.81 Z M49
2024-10-08 20:01:00 B 00 24 18.907 +23 38 42.44 Z M49
2024-10-08 20:02:22 B 00 24 12.67 +23 34 06.8 X L99
2024-10-08 20:02:52 B 00 24 12.11 +23 33 59.9 X L99
2024-10-08 20:03:22 B 00 24 11.57 +23 33 52.2 X L99
2024-10-08 20:03:52 B 00 24 11.04 +23 33 44.5 X L99
2024-10-08 20:04:22 B 00 24 10.49 +23 33 35.8 X L99
2024-10-08 20:18:06 B 00 24 00.052 +23 34 16.42 Z M49
2024-10-08 20:50:46 B 00 23 23.701 +23 25 42.62 Z M49
2024-10-08 21:06:46 B 00 23 05.775 +23 21 28.45 Z M49
2024-10-08 21:23:22 B 00 22 47.090 +23 17 03.10 Z M49
2024-10-08 21:39:59 B 00 22 28.335 +23 12 35.95 Z M49
2024-10-08 22:33:23 C 00 21 26.82 +22 53 41.1 V M32
2024-10-08 22:34:00 C 00 21 26.14 +22 53 31.1 V M32
2024-10-08 22:34:31 C 00 21 25.57 +22 53 22.7 V M32
2024-10-08 22:35:06 C 00 21 24.88 +22 53 12.5 V M32
2024-10-08 22:35:37 C 00 21 24.30 +22 53 04.1 V M32
2024-10-08 22:36:08 C 00 21 23.74 +22 52 55.8 V M32
2024-10-09 02:10:30 B 00 17 34.25 +21 55 22.5 Z X33
2024-10-09 02:13:02 B 00 17 31.15 +21 54 37.1 Z X33
Radar Observations (13)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2001-10-07 01:39:00 77102108.2 12 us 2380 -1 -1
2001-10-09 00:34:00 107972.7 1 Hz 2380 -1 -1
2001-10-09 00:54:00 67766228.3 8 us 2380 -1 -1
2001-10-09 02:47:00 67469526.191 1.5 us 2380 -1 -1
2004-10-03 10:24:00 139197784 2 us 2380 -1 -1
2004-10-04 09:50:00 133969457.4 2 us 2380 -1 -1
2004-10-06 11:14:00 125499084.5 2 us 2380 -1 -1
2024-10-04 11:00:00 77195497.4 10 us 8560 -14 -14
2024-10-04 11:30:00 77005452.764 1 us 8560 -14 -14
2024-10-05 06:20:00 69794337.38 2 us 8560 -14 -14
2024-10-09 04:10:00 36603483 1 us 8560 -14 -14
2024-10-11 01:40:00 25630281.69 0.5 us 8560 -14 -14
2024-10-12 01:30:00 23741602 0.5 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)