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
2018-09-18 10:05:03 C 21 16 23.03 +29 29 19.7 U T05
2018-09-18 10:18:29 C 21 16 20.80 +29 28 38.7 U T05
2018-09-20 19:27:54 C 21 07 58.98 +26 29 33.8 q K63
2018-09-20 19:31:47 C 21 07 58.37 +26 29 21.9 q K63
2018-09-20 19:46:01 C 21 07 56.32 +26 28 36.5 q K63
2018-09-20 20:38:35 C 21 07 48.57 +26 25 48.9 q 160
2018-09-20 20:42:14 C 21 07 48.03 +26 25 37.1 q 160
2018-09-20 20:45:53 C 21 07 47.52 +26 25 25.7 q 160
2018-09-21 20:44:57 C 21 04 30.73 +25 08 27.0 q 160
2018-09-21 20:48:14 C 21 04 30.29 +25 08 16.9 q 160
2018-09-21 20:52:16 C 21 04 29.71 +25 08 04.3 q 160
2018-09-28 08:21:18 C 20 46 35.34 +16 38 47.3 U T08
2018-09-28 08:37:00 C 20 46 33.66 +16 37 56.1 U T08
2018-09-28 08:52:22 C 20 46 32.10 +16 37 06.0 U T08
2018-09-28 09:08:22 C 20 46 30.44 +16 36 13.8 U T08
2018-10-10 06:16:19 S 20 27 15.679 +02 05 57.19 L C51
2018-10-10 09:24:49 S 20 27 07.906 +01 57 19.12 L C51
2018-10-10 10:59:04 S 20 27 04.003 +01 53 00.17 L C51
2018-10-10 12:32:35 S 20 27 00.235 +01 48 46.12 L C51
2018-10-10 17:15:53 S 20 26 48.842 +01 35 51.86 L C51
2018-10-10 20:24:12 S 20 26 41.376 +01 27 20.81 L C51
2018-10-10 20:24:23 S 20 26 41.374 +01 27 19.84 L C51
2021-07-20 17:22:26 S 00 55 37.169 +38 30 58.54 L C51
2021-07-20 20:30:34 S 00 55 42.331 +38 32 38.00 L C51
2021-07-21 05:55:09 S 00 55 57.574 +38 37 32.56 L C51
2021-07-21 16:54:00 S 00 56 15.252 +38 43 16.90 L C51
2021-07-31 09:03:02 S 01 00 40.313 +40 41 35.92 L C51
2021-09-05 10:43:56 C 00 14 48.40 +44 26 53.1 V T08
2021-09-05 10:46:35 C 00 14 47.97 +44 26 52.2 V T08
2021-09-05 10:52:35 C 00 14 46.98 +44 26 50.3 V T08
2021-09-05 11:01:55 C 00 14 45.41 +44 26 47.0 V T08
2021-09-07 10:26:21 C 00 07 02.50 +44 06 08.6 V T05
2021-09-07 10:28:59 C 00 07 02.12 +44 06 06.6 V T05
2021-09-07 10:35:58 C 00 07 00.74 +44 06 02.4 V T05
2021-09-07 10:50:53 C 00 06 58.06 +44 05 55.7 V T05
2021-09-11 09:12:34 C 23 49 20.58 +42 57 51.7 V T05
2021-09-11 09:15:12 C 23 49 20.03 +42 57 49.4 V T05
2021-09-11 09:30:44 C 23 49 16.68 +42 57 34.8 V T05
2021-09-11 09:41:19 C 23 49 14.44 +42 57 25.8 V T05
2021-09-12 07:21:32 C 23 44 45.52 +42 35 38.6 V 703
2021-09-12 07:40:43 C 23 44 41.28 +42 35 18.7 V 703
2021-09-12 07:57:04 C 23 44 37.69 +42 35 01.1 V 703
2021-09-13 04:24:33 C 23 40 17.58 +42 11 50.7 X U55
2021-09-13 04:28:44 C 23 40 16.61 +42 11 45.9 X U55
2021-09-13 04:32:55 C 23 40 15.70 +42 11 42.3 X U55
2021-09-13 08:31:55 C 23 39 23.48 +42 07 16.5 V T08
2021-09-13 08:32:35 C 23 39 23.40 +42 07 16.1 V T08
2021-09-13 08:38:36 C 23 39 22.03 +42 07 09.3 V T08
2021-09-13 08:39:16 C 23 39 21.93 +42 07 08.3 V T08
2021-09-13 09:01:57 C 23 39 16.67 +42 06 41.7 V T08
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)