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
2021-10-06 07:39:49 C 21 20 06.15 +11 28 59.1 V T08
2021-10-07 02:05:34 C 21 15 59.02 +09 53 40.5 V G96
2021-10-07 02:13:45 C 21 15 57.11 +09 52 58.3 V G96
2021-10-07 02:21:54 C 21 15 55.20 +09 52 16.4 V G96
2021-10-07 02:30:06 C 21 15 53.29 +09 51 33.9 V G96
2021-10-07 07:29:25 C 21 14 45.44 +09 25 55.2 V T05
2021-10-07 07:44:44 C 21 14 41.87 +09 24 36.0 V T05
2021-10-07 08:09:12 C 21 14 36.16 +09 22 29.3 V T05
2021-10-09 02:57:38 C 21 05 25.18 +05 41 16.0 V G96
2021-10-09 03:05:49 C 21 05 23.36 +05 40 33.6 V G96
2021-10-09 03:08:47 C 21 05 22.69 +05 40 18.3 V 703
2021-10-09 03:14:03 C 21 05 21.53 +05 39 51.2 V G96
2021-10-09 03:16:23 C 21 05 20.99 +05 39 38.5 V 703
2021-10-09 03:22:16 C 21 05 19.76 +05 39 09.1 V G96
2021-10-09 03:24:00 C 21 05 19.34 +05 38 59.1 V 703
2021-10-09 03:31:37 C 21 05 17.66 +05 38 21.3 V 703
2021-10-09 06:31:51 C 21 04 40.02 +05 23 03.6 V T08
2021-10-09 06:39:48 C 21 04 38.30 +05 22 22.5 V T08
2021-10-09 06:45:47 C 21 04 37.03 +05 21 52.6 V T08
2021-10-09 07:07:41 C 21 04 32.11 +05 20 00.0 V T08
2021-10-09 19:38:08 C 21 01 57.69 +04 15 35.9 V G17
2021-10-09 19:43:24 C 21 01 56.56 +04 15 09.0 V G17
2021-10-09 19:48:49 C 21 01 55.37 +04 14 40.9 V G17
2021-10-10 01:58:58 C 21 00 41.22 +03 43 18.3 V 703
2021-10-10 02:08:27 C 21 00 39.21 +03 42 29.8 V 703
2021-10-10 02:17:56 C 21 00 37.15 +03 41 41.6 V 703
2021-10-10 02:27:25 C 21 00 35.18 +03 40 53.4 V 703
2021-10-10 19:19:18 C 20 57 11.82 +02 15 05.5 V K74
2021-10-10 19:24:16 C 20 57 10.78 +02 14 40.5 V K74
2021-10-10 19:29:51 C 20 57 09.65 +02 14 12.8 V K74
2021-10-10 19:35:22 C 20 57 08.51 +02 13 44.7 V K74
2021-10-10 20:54:56 C 20 56 51.63 +02 07 03.3 V L18
2021-10-10 20:58:14 C 20 56 50.99 +02 06 45.3 V L18
2021-10-10 21:01:41 C 20 56 50.31 +02 06 28.2 V L18
2021-10-11 07:34:28 C 20 54 46.54 +01 13 44.0 V T05
2021-10-11 07:39:06 C 20 54 45.59 +01 13 21.0 V T05
2021-10-11 07:48:20 C 20 54 43.67 +01 12 34.5 V T05
2021-10-11 08:11:30 C 20 54 38.93 +01 10 38.4 V T05
2021-10-13 01:43:35 S 20 46 49.296 -02 14 05.24 L C51
2021-10-13 04:51:43 S 20 46 14.861 -02 29 15.86 L C51
2021-10-13 06:25:47 S 20 45 57.686 -02 36 50.33 L C51
2021-10-13 09:33:55 S 20 45 23.474 -02 51 57.24 L C51
2021-10-14 06:17:09 C 20 41 41.29 -04 30 54.3 V T05
2021-10-14 06:19:52 C 20 41 40.77 -04 31 06.6 V T05
2021-10-14 06:31:48 C 20 41 38.53 -04 32 03.1 V T05
2021-10-14 06:34:27 C 20 41 38.05 -04 32 15.9 V T05
2021-10-14 06:40:31 C 20 41 36.94 -04 32 43.8 V T05
2021-10-14 06:51:23 C 20 41 34.82 -04 33 34.9 V T05
2021-10-14 06:54:53 C 20 41 34.16 -04 33 51.4 V T05
2021-10-15 00:45:14 S 20 38 28.454 -05 56 48.37 L C51
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)