450894 (2008 BT18)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5946032813 ± 5.82e-09
Semi-major axis (a)2.2193602800 AU ± 1.03e-09
Inclination (i)8.14558352° ± 2.54e-06
Long. of Asc. Node (Ω)107.52549950° ± 7.28e-06
Arg. of Perihelion (ω)139.39358812° ± 7.54e-06
Mean Anomaly (M)97.82055920° ± 1.46e-06
Mean Motion (n)0.2981058937°/day ± 2.07e-10
Perihelion dist (q)0.89972138 AU ± 1.29e-08
Aphelion dist (Q)3.53899918 AU ± 1.30e-08
Orbital Period3.30629586 yr ± 2.29e-09
Physical Parameters
H (abs. magnitude)18.17
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.329″
Uncertainty0
Orbit TypeApollo
MOID0.013407 AU
Observations Used416
Radar Obs Used3
Oppositions37
Arc Total1955-2025
First Observation Used1955-03-14
Last Observation Used2025-11-26
Observations (453)
Date Type RA Dec Mag Band Observatory
2018-02-26 06:36:20 C 12 25 16.81 +22 21 55.7 U G96
2018-02-26 06:43:52 C 12 25 17.21 +22 22 05.8 U G96
2018-02-26 06:51:26 C 12 25 17.61 +22 22 15.9 U G96
2018-02-26 07:07:51 C 12 25 18.47 +22 22 38.2 U 703
2018-02-26 07:15:35 C 12 25 18.88 +22 22 48.4 U 703
2018-02-26 07:23:20 C 12 25 19.29 +22 22 58.6 U 703
2018-02-26 07:31:05 C 12 25 19.68 +22 23 09.2 U 703
2018-03-05 09:07:37 C 12 35 53.03 +26 39 25.7 U I41
2018-03-05 09:15:32 C 12 35 53.52 +26 39 39.2 U I41
2018-03-05 09:33:26 C 12 35 54.62 +26 40 09.8 U I41
2018-03-05 09:40:44 C 12 35 55.08 +26 40 22.5 U I41
2018-03-05 10:40:49 C 12 35 58.77 +26 42 04.9 U I41
2018-03-05 10:41:32 C 12 35 58.81 +26 42 06.2 U I41
2018-03-05 11:03:19 C 12 36 00.16 +26 42 43.0 U I41
2018-03-05 11:04:01 C 12 36 00.22 +26 42 44.2 U I41
2018-03-06 13:11:05 C 12 37 49.813 +27 28 31.09 U F51
2018-03-06 13:11:24 C 12 37 49.86 +27 28 31.7 U T05
2018-03-06 13:24:53 C 12 37 50.68 +27 28 55.5 U T05
2018-03-06 13:53:32 C 12 37 52.52 +27 29 45.9 U T05
2018-03-06 14:01:23 C 12 37 53.00 +27 30 00.0 U T05
2018-03-06 14:02:33 C 12 37 53.089 +27 30 01.92 U F51
2018-03-07 07:46:23 C 12 39 11.53 +28 02 01.3 U I41
2018-03-07 08:16:37 C 12 39 13.53 +28 02 57.2 U I41
2018-03-07 08:46:56 C 12 39 15.53 +28 03 53.2 U I41
2018-03-07 09:06:09 C 12 39 16.79 +28 04 28.5 U I41
2018-03-07 09:59:20 C 12 39 20.14 +28 06 05.4 U 703
2018-03-07 10:06:53 C 12 39 20.61 +28 06 19.6 U 703
2018-03-07 10:14:26 C 12 39 21.11 +28 06 32.9 U 703
2018-03-07 10:21:58 C 12 39 21.58 +28 06 47.9 U 703
2018-03-09 07:39:42 C 12 42 49.78 +29 32 55.7 U I41
2018-03-09 08:07:52 C 12 42 51.80 +29 33 51.6 U I41
2018-03-09 08:52:18 C 12 42 54.96 +29 35 19.6 U I41
2018-03-09 08:56:57 C 12 42 55.30 +29 35 28.8 U I41
2018-03-09 09:21:50 C 12 42 57.07 +29 36 17.9 U I41
2018-03-17 11:48:59 C 13 01 47.26 +36 58 09.4 U T05
2018-03-17 11:58:12 C 13 01 48.27 +36 58 33.4 U T05
2018-03-17 12:17:02 C 13 01 50.30 +36 59 22.2 U T05
2018-03-17 12:17:41 C 13 01 50.37 +36 59 23.9 U T05
2018-03-17 12:29:26 C 13 01 51.66 +36 59 54.1 U T05
2018-03-17 12:34:57 C 13 01 52.26 +37 00 08.4 U T05
2018-03-17 12:49:45 C 13 01 53.87 +37 00 46.7 U T05
2018-03-17 13:07:16 C 13 01 55.79 +37 01 31.7 U T05
2018-03-19 08:47:20 C 13 07 33.01 +38 58 21.6 U 703
2018-03-19 08:54:48 C 13 07 33.96 +38 58 42.1 U 703
2018-03-19 09:02:18 C 13 07 34.89 +38 59 02.7 U 703
2018-03-19 09:09:47 C 13 07 35.82 +38 59 23.3 U 703
2018-03-21 08:35:56 C 13 14 33.82 +41 14 21.3 U 703
2018-03-21 08:43:41 C 13 14 34.97 +41 14 45.0 U 703
2018-03-21 08:51:53 C 13 14 36.20 +41 15 08.0 U 703
2018-03-21 09:00:00 C 13 14 37.32 +41 15 31.5 U 703
Radar Observations (6)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2008-07-06 17:46:00 205143.4113 2 Hz 2380 -1 -1
2008-07-06 19:30:00 60891468.71 2 us 2380 -1 -1
2008-07-06.740278 20514341 200 Hz 2380 251 251
2008-07-06.812500 6089146871 2000 us 2380 251 251
2008-07-07 17:32:00 54147421 1 us 2380 -1 -1
2008-07-07.730556 5414742100 1000 us 2380 251 251
Station codes
-1 Arecibo (305-m, 1963–2020)