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
2001-09-24 07:59:36 C 01 08 41.50 +41 42 04.9 658
2001-09-24 08:03:25 C 01 08 40.67 +41 42 01.6 658
2001-09-24 08:09:18 C 01 08 39.39 +41 41 56.4 658
2001-09-24 09:25:37 C 01 08 22.62 +41 41 02.9 16.9 c 644
2001-09-24 09:41:49 C 01 08 19.09 +41 40 48.1 17.0 c 644
2001-09-24 09:57:15 C 01 08 15.74 +41 40 33.7 16.9 c 644
2001-09-24 20:58:05 C 01 06 03.63 +41 29 58.7 r 938
2001-09-24 22:20:28 C 01 05 45.47 +41 28 45.6 r 938
2001-09-25 23:54:44 C 00 59 59.61 +41 00 59.4 c 945
2001-09-26 00:01:26 C 00 59 58.08 +41 00 52.1 c 945
2001-09-26 00:08:17 C 00 59 56.32 +41 00 43.7 c 945
2001-09-26 07:30:02 C 00 58 10.86 +40 51 48.9 c 670
2001-09-26 07:54:00 C 00 58 03.70 +40 51 19.5 17.2 i 704
2001-09-26 08:16:44 C 00 57 57.74 +40 50 50.1 17.5 i 704
2001-09-26 08:59:12 C 00 57 46.62 +40 49 54.0 17.4 i 704
2001-09-26 09:22:58 C 00 57 40.35 +40 49 23.0 17.4 i 704
2001-09-26 09:52:55 C 00 57 33.45 +40 48 45.8 c 670
2001-09-26 12:10:42 C 00 56 57.32 +40 45 34.3 c 670
2001-09-26 20:41:49 C 00 54 53.87 +40 33 51.6 c 587
2001-09-26 20:45:14 C 00 54 52.96 +40 33 47.0 c 587
2001-09-26 20:50:53 C 00 54 51.40 +40 33 39.5 c 587
2001-09-27 19:05:51 C 00 48 51.60 +39 59 19.8 d 151
2001-09-27 19:08:19 C 00 48 51.01 +39 59 16.4 d 151
2001-09-27 19:12:37 C 00 48 49.71 +39 59 09.5 d 151
2001-09-27 19:15:38 C 00 48 48.87 +39 59 04.6 d 151
2001-09-27 19:24:05 C 00 48 46.37 +39 58 51.4 d 151
2001-09-27 19:26:24 C 00 48 45.71 +39 58 48.0 d 151
2001-09-28 06:07:21 C 00 45 38.31 +39 40 38.0 16.3 c 704
2001-09-28 06:29:01 C 00 45 31.47 +39 39 59.2 16.9 c 704
2001-09-28 06:50:51 C 00 45 24.58 +39 39 20.3 16.6 c 704
2001-09-28 07:12:30 C 00 45 17.71 +39 38 41.1 16.7 c 704
2001-09-28 07:34:06 C 00 45 10.86 +39 38 01.3 16.7 c 704
2001-09-29 23:22:16 C 00 32 16.44 +38 12 24.2 d 946
2001-09-29 23:25:36 C 00 32 15.21 +38 12 16.0 d 946
2001-09-29 23:35:57 C 00 32 11.40 +38 11 50.2 d 946
2001-09-29 23:37:43 C 00 32 10.74 +38 11 45.7 d 946
2001-09-30 19:09:39 C 00 25 02.53 +37 18 38.1 d 151
2001-09-30 19:10:36 C 00 25 02.08 +37 18 35.5 d 151
2001-09-30 19:13:59 C 00 25 00.78 +37 18 26.4 d 151
2001-09-30 19:16:07 C 00 25 00.11 +37 18 22.0 d 151
2001-09-30 19:17:30 C 00 24 59.37 +37 18 15.5 d 151
2001-10-02 01:56:17 C 00 12 25.96 +35 37 14.2 i 726
2001-10-02 02:01:18 C 00 12 23.77 +35 36 56.0 i 726
2001-10-02 02:06:18 C 00 12 21.54 +35 36 37.5 i 726
2001-10-02 02:11:17 C 00 12 19.29 +35 36 20.6 i 726
2001-10-02 02:16:17 C 00 12 16.95 +35 36 01.0 i 726
2001-10-02 02:21:17 C 00 12 14.74 +35 35 44.3 i 726
2001-10-02 03:38:51 C 00 11 41.01 +35 30 47.2 c 642
2001-10-02 03:40:26 C 00 11 40.31 +35 30 41.9 c 642
2001-10-02 03:42:02 C 00 11 39.58 +35 30 35.9 c 642
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)