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
2015-07-22 08:24:46 S 23 48 10.32 +55 41 15.2 L C51
2015-07-22 08:24:57 S 23 48 10.21 +55 41 16.1 L C51
2015-10-15 01:22:58 C 20 04 07.84 -02 12 59.6 u H21
2015-10-15 01:27:46 C 20 04 07.97 -02 13 08.0 u H21
2015-10-15 01:32:42 C 20 04 08.08 -02 13 16.7 u H21
2015-10-15 01:37:03 C 20 04 08.20 -02 13 24.1 u H21
2015-10-15 01:41:24 C 20 04 08.30 -02 13 31.8 u H21
2015-10-15 01:45:45 C 20 04 08.43 -02 13 39.3 u H21
2015-10-15 01:50:06 C 20 04 08.56 -02 13 46.2 u H21
2015-10-15 01:54:27 C 20 04 08.65 -02 13 53.5 u H21
2015-10-15 01:58:49 C 20 04 08.77 -02 14 00.8 u H21
2015-10-15 02:03:10 C 20 04 08.90 -02 14 07.9 u H21
2015-10-15 02:07:31 C 20 04 09.01 -02 14 15.2 u H21
2015-10-15 02:12:00 C 20 04 09.14 -02 14 22.8 u H21
2015-10-16 18:51:56 S 20 05 25.999 -03 21 06.95 L C51
2015-10-16 18:52:07 S 20 05 26.119 -03 21 09.47 L C51
2015-10-16 22:00:59 S 20 05 32.30 -03 26 13.2 L C51
2015-10-17 05:53:09 S 20 05 48.01 -03 38 49.6 L C51
2015-10-17 09:02:01 S 20 05 54.45 -03 43 49.4 L C51
2015-10-17 10:36:27 S 20 05 57.51 -03 46 20.5 L C51
2015-10-17 12:10:54 S 20 06 00.71 -03 48 50.1 L C51
2015-10-17 15:19:46 S 20 06 07.18 -03 53 47.7 L C51
2015-10-17 18:28:37 S 20 06 13.73 -03 58 46.7 L C51
2015-11-03 01:35:27 C 20 23 45.07 -12 31 31.8 q G96
2015-11-03 01:42:02 C 20 23 45.38 -12 31 39.6 q G96
2015-11-03 01:48:38 C 20 23 45.71 -12 31 47.0 q G96
2015-11-03 01:55:12 C 20 23 46.03 -12 31 54.7 q G96
2018-07-19 08:59:37 S 00 28 28.06 +44 42 02.2 L C51
2018-07-19 12:07:56 S 00 28 24.30 +44 43 43.2 L C51
2018-07-19 15:16:26 S 00 28 20.65 +44 45 20.9 L C51
2018-07-19 18:24:56 S 00 28 16.65 +44 47 02.7 L C51
2018-07-19 21:33:15 S 00 28 12.71 +44 48 42.8 L C51
2018-07-19 21:33:27 S 00 28 12.70 +44 48 42.8 L C51
2018-07-19 23:07:30 S 00 28 10.73 +44 49 33.5 L C51
2018-07-20 00:41:45 S 00 28 08.72 +44 50 22.7 L C51
2018-07-20 05:24:31 S 00 28 02.47 +44 52 54.5 L C51
2018-07-20 11:41:20 S 00 27 54.13 +44 56 10.8 L C51
2018-08-07 12:48:26 C 00 05 19.121 +48 08 31.04 V T12
2018-08-07 12:50:01 C 00 05 18.954 +48 08 31.49 V T12
2018-08-31 23:23:13 C 22 35 36.08 +45 07 29.3 q C95
2018-08-31 23:42:04 C 22 35 32.15 +45 07 05.7 q C95
2018-09-01 00:00:55 C 22 35 28.12 +45 06 42.0 q C95
2018-09-03 11:19:32 C 22 23 20.19 +43 42 37.9 o 291
2018-09-03 11:23:51 C 22 23 19.32 +43 42 31.1 o 291
2018-09-13 00:33:26 C 21 38 13.13 +35 40 01.8 V W34
2018-09-15 06:26:59 C 21 28 42.214 +33 12 52.86 V T12
2018-09-15 06:27:48 C 21 28 42.067 +33 12 50.59 V T12
2018-09-18 09:46:19 C 21 16 26.04 +29 30 18.0 U T05
2018-09-18 09:48:27 C 21 16 25.75 +29 30 11.0 U T05
2018-09-18 10:02:30 C 21 16 23.39 +29 29 28.1 U T05
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)