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
2004-09-02 13:23:26 C 03 19 28.38 +37 03 10.7 o 568
2004-09-02 13:28:23 C 03 19 28.90 +37 03 11.3 o 568
2004-09-18 08:49:34 C 04 25 03.60 +35 38 59.1 19.5 c 704
2004-09-18 09:06:47 C 04 25 07.70 +35 38 47.0 19.6 c 704
2004-09-18 09:24:02 C 04 25 11.68 +35 38 36.0 19.8 c 704
2004-09-18 09:41:15 C 04 25 15.72 +35 38 23.8 20.1 c 704
2004-09-18 09:58:41 C 04 25 19.83 +35 38 11.8 19.9 c 704
2007-08-26 09:45:12 C 03 55 29.47 +31 58 24.6 o H55
2007-08-26 09:51:29 C 03 55 30.49 +31 58 24.2 o H55
2007-08-26 09:58:18 C 03 55 31.64 +31 58 23.2 o H55
2009-08-13 02:33:38 C 17 16 42.09 +49 24 57.8 o H55
2009-08-13 02:48:30 C 17 16 43.87 +49 24 10.8 o H55
2009-08-13 03:02:45 C 17 16 45.58 +49 23 25.2 o H55
2012-07-22 23:22:16 C 22 06 11.92 +71 55 28.3 t 204
2012-07-22 23:50:19 C 22 05 58.99 +71 55 01.7 t 204
2012-08-11 06:34:00 C 19 51 29.12 +57 37 08.4 u H45
2012-08-11 06:35:29 C 19 51 28.75 +57 37 04.9 u H45
2012-08-11 06:37:04 C 19 51 28.62 +57 37 01.0 u H45
2012-08-11 06:38:32 C 19 51 28.31 +57 36 57.9 u H45
2012-08-11 06:43:49 C 19 51 27.40 +57 36 43.3 u H45
2012-08-11 06:46:03 C 19 51 27.06 +57 36 38.2 u H45
2012-08-12 06:03:59 C 19 47 55.71 +56 36 38.0 u H45
2012-08-12 06:06:15 C 19 47 55.33 +56 36 30.1 u H45
2012-08-12 06:07:51 C 19 47 55.09 +56 36 26.0 u H45
2012-08-12 06:09:32 C 19 47 54.93 +56 36 23.0 u H45
2012-08-12 06:11:07 C 19 47 54.52 +56 36 19.3 u H45
2012-08-12 06:13:27 C 19 47 54.27 +56 36 12.7 u H45
2012-08-14 05:36:33 C 19 41 25.11 +54 30 43.0 u H45
2012-08-14 05:39:36 C 19 41 24.58 +54 30 32.5 u H45
2012-08-14 05:41:53 C 19 41 24.33 +54 30 26.6 u H45
2012-08-14 05:44:04 C 19 41 23.97 +54 30 21.0 u H45
2012-08-14 05:45:46 C 19 41 23.75 +54 30 17.0 u H45
2012-08-14 05:47:29 C 19 41 23.63 +54 30 12.4 u H45
2012-09-24 23:32:49 C 19 20 23.97 +10 08 17.4 u 807
2012-09-24 23:37:02 C 19 20 24.15 +10 08 09.2 u 807
2012-09-24 23:41:30 C 19 20 24.29 +10 08 00.2 u 807
2012-11-05 05:01:36 c 20 20 29.236 -10 56 17.13 L F51
2012-11-05 05:08:18 c 20 20 29.729 -10 56 22.06 L F51
2012-11-05 05:14:58 c 20 20 30.208 -10 56 27.10 L F51
2012-11-05 05:21:39 c 20 20 30.693 -10 56 32.16 L F51
2015-07-21 08:47:54 S 23 51 15.94 +55 33 27.8 L C51
2015-07-21 11:56:46 S 23 50 51.56 +55 34 32.3 L C51
2015-07-21 11:56:56 S 23 50 51.49 +55 34 32.4 L C51
2015-07-21 15:05:49 S 23 50 26.988 +55 35 33.90 L C51
2015-07-21 16:40:15 S 23 50 14.74 +55 36 08.1 L C51
2015-07-21 22:58:09 S 23 49 25.41 +55 38 11.6 L C51
2015-07-22 00:32:36 S 23 49 12.79 +55 38 43.9 L C51
2015-07-22 02:07:02 S 23 49 00.46 +55 39 14.5 L C51
2015-07-22 03:41:28 S 23 48 47.84 +55 39 45.0 L C51
2015-07-22 05:15:54 S 23 48 35.40 +55 40 15.2 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)