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
2021-09-15 06:47:58 C 23 28 58.57 +41 04 59.8 V 703
2021-09-15 06:56:30 C 23 28 56.37 +41 04 47.4 V 703
2021-09-15 07:04:55 C 23 28 54.28 +41 04 35.0 V 703
2021-09-15 07:13:03 C 23 28 52.33 +41 04 22.9 V 703
2021-09-15 08:55:42 C 23 28 29.445 +41 01 54.35 U F52
2021-09-15 09:10:22 C 23 28 25.871 +41 01 32.68 U F52
2021-09-15 09:25:03 C 23 28 22.295 +41 01 10.81 U F52
2021-09-15 11:09:59 C 23 27 56.62 +40 58 32.3 V T05
2021-09-15 11:14:36 C 23 27 55.55 +40 58 24.8 V T05
2021-09-15 11:24:28 C 23 27 53.09 +40 58 09.3 V T05
2021-09-15 11:40:24 C 23 27 49.21 +40 57 44.4 V T05
2021-09-18 04:23:23 C 23 12 14.31 +39 04 02.9 V G96
2021-09-18 04:31:44 C 23 12 12.21 +39 03 46.5 V G96
2021-09-18 04:41:37 C 23 12 09.66 +39 03 27.2 V G96
2021-09-18 04:51:22 C 23 12 07.12 +39 03 08.1 V G96
2021-09-18 07:38:44 C 23 11 25.637 +38 57 38.00 U F52
2021-09-18 07:55:08 C 23 11 21.352 +38 57 05.51 U F52
2021-09-18 08:11:34 C 23 11 17.055 +38 56 32.91 U F52
2021-09-22 10:07:25 C 22 45 53.75 +34 58 24.3 V T05
2021-09-22 10:12:49 C 22 45 52.25 +34 58 08.8 V T05
2021-09-22 10:27:51 C 22 45 48.06 +34 57 25.0 V T05
2021-09-22 10:36:43 C 22 45 45.61 +34 56 59.6 V T05
2021-09-23 16:48:57 C 22 37 41.22 +33 26 12.2 V D29
2021-09-23 17:01:04 C 22 37 37.82 +33 25 34.2 V D29
2021-09-23 17:13:12 C 22 37 34.47 +33 24 55.3 V D29
2021-09-23 21:01:51 C 22 36 35.27 +33 12 49.6 V 160
2021-09-23 21:04:54 C 22 36 34.37 +33 12 39.9 V 160
2021-09-23 21:07:45 C 22 36 33.56 +33 12 30.6 V 160
2021-09-23 21:24:58 C 22 36 29.18 +33 11 30.5 V Z80
2021-09-23 21:31:38 C 22 36 27.31 +33 11 09.5 V Z80
2021-09-23 21:38:18 C 22 36 25.48 +33 10 48.2 V Z80
2021-09-24 07:01:34 C 22 33 52.89 +32 40 43.6 V 703
2021-09-24 07:17:11 C 22 33 48.50 +32 39 52.1 V 703
2021-09-24 07:24:59 C 22 33 46.31 +32 39 26.4 V 703
2021-09-25 00:32:07 C 22 29 13.03 +31 41 58.7 V W46
2021-09-25 01:27:59 C 22 28 57.47 +31 38 48.9 V W46
2021-09-25 01:31:31 C 22 28 56.49 +31 38 37.0 V W46
2021-09-25 20:57:53 C 22 23 41.60 +30 29 53.0 V G33
2021-09-25 21:00:50 C 22 23 40.69 +30 29 41.1 V G33
2021-09-25 21:04:36 C 22 23 39.73 +30 29 28.1 V G33
2021-09-25 21:07:58 C 22 23 38.78 +30 29 15.6 V G33
2021-09-26 00:27:19 C 22 22 46.73 +30 17 16.7 X W34
2021-09-26 00:38:19 C 22 22 43.69 +30 16 37.3 X W34
2021-09-26 00:50:00 C 22 22 40.43 +30 15 55.0 X W34
2021-09-27 21:21:11 C 22 10 42.10 +27 24 19.2 V L18
2021-09-27 21:23:19 C 22 10 41.52 +27 24 10.2 V L18
2021-09-27 21:25:27 C 22 10 40.93 +27 24 01.9 V L18
2021-09-27 21:27:52 C 22 10 40.23 +27 23 51.7 V L18
2021-09-28 04:57:39 C 22 08 41.43 +26 53 29.5 V 703
2021-09-28 05:05:13 C 22 08 39.33 +26 52 58.5 V 703
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)