164211 (2004 JA27)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4232887651 ± 1.05e-08
Semi-major axis (a)1.6663096345 AU ± 9.45e-10
Inclination (i)2.25792174° ± 2.63e-06
Long. of Asc. Node (Ω)67.75991093° ± 4.12e-05
Arg. of Perihelion (ω)270.19800377° ± 4.19e-05
Mean Anomaly (M)312.23704406° ± 3.10e-06
Mean Motion (n)0.4582249348°/day ± 3.90e-10
Perihelion dist (q)0.96097949 AU ± 1.75e-08
Aphelion dist (Q)2.37163978 AU ± 1.75e-08
Orbital Period2.15096606 yr ± 1.83e-09
Physical Parameters
H (abs. magnitude)19.50
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.402″
Uncertainty0
Orbit TypeApollo
MOID0.032518 AU
Observations Used454
Radar Obs Used1
Oppositions1
Arc Total2004-2025
First Observation Used2004-05-15
Last Observation Used2025-03-01
Observations (486)
Date Type RA Dec Mag Band Observatory
2004-11-20 22:56:46 C 03 51 11.92 +18 36 52.2 d A56
2004-11-20 23:22:55 C 03 51 09.87 +18 36 56.5 c 108
2004-11-20 23:30:00 C 03 51 09.56 +18 36 59.4 c 108
2004-11-20 23:36:36 C 03 51 09.10 +18 37 00.8 c 108
2004-11-21 22:44:37 C 03 49 39.63 +18 40 34.5 o 084
2004-11-22 22:12:00 C 03 48 12.86 +18 44 10.6 o 084
2004-11-30 05:51:18 C 03 39 20.65 +19 07 52.6 o 699
2004-11-30 06:33:28 C 03 39 18.68 +19 07 57.5 o 699
2004-11-30 07:15:39 C 03 39 16.68 +19 08 02.9 o 699
2004-11-30 07:57:49 C 03 39 14.72 +19 08 08.5 o 699
2004-12-04 06:09:10 C 03 35 55.26 +19 19 12.1 d G72
2004-12-04 06:26:27 C 03 35 54.62 +19 19 15.5 d G72
2004-12-04 07:05:24 C 03 35 53.21 +19 19 19.3 d G72
2004-12-04 07:17:45 C 03 35 52.77 +19 19 20.0 d G72
2004-12-04 07:30:32 C 03 35 52.35 +19 19 21.6 d G72
2004-12-04 07:47:53 C 03 35 51.64 +19 19 24.3 d G72
2004-12-09 07:39:55 C 03 32 58.78 +19 33 03.9 d 703
2004-12-09 07:51:31 C 03 32 58.58 +19 33 04.8 d 703
2004-12-09 08:03:07 C 03 32 58.27 +19 33 06.0 d 703
2004-12-09 08:14:39 C 03 32 58.01 +19 33 07.9 d 703
2004-12-12 20:52:35 C 03 31 49.15 +19 42 51.2 c 246
2004-12-12 20:53:46 C 03 31 49.14 +19 42 51.5 c 246
2004-12-12 20:55:05 C 03 31 49.11 +19 42 51.9 c 246
2004-12-12 20:56:04 C 03 31 49.07 +19 42 51.7 c 246
2004-12-12 20:57:07 C 03 31 49.06 +19 42 52.3 c 246
2004-12-12 20:58:20 C 03 31 49.06 +19 42 52.1 c 246
2004-12-12 21:00:52 C 03 31 49.02 +19 42 52.5 c 246
2004-12-12 21:03:22 C 03 31 48.99 +19 42 52.7 c 246
2004-12-18 22:36:01 C 03 31 22.74 +20 00 41.5 r 941
2004-12-18 22:37:41 C 03 31 22.74 +20 00 41.7 r 941
2004-12-18 22:39:21 C 03 31 22.75 +20 00 42.0 r 941
2004-12-18 22:42:51 C 03 31 22.75 +20 00 42.6 r 941
2006-03-23 11:12:35 C 14 02 59.55 -09 05 53.2 d 291
2006-03-23 11:20:20 C 14 02 59.29 -09 05 51.6 d 291
2006-03-23 11:31:26 C 14 02 58.88 -09 05 49.5 d 291
2006-03-26 09:00:19 C 14 00 21.63 -08 49 50.9 r G96
2006-03-26 09:11:22 C 14 00 21.09 -08 49 48.6 r G96
2006-03-26 09:22:22 C 14 00 20.59 -08 49 46.0 r G96
2006-03-26 09:33:28 C 14 00 20.16 -08 49 43.7 r G96
2006-04-09 05:50:18 C 13 43 20.37 -07 12 05.9 c 691
2006-04-09 06:15:17 C 13 43 18.94 -07 11 58.7 c 691
2006-04-09 06:40:16 C 13 43 17.22 -07 11 48.9 c 691
2006-04-29 04:20:49 C 13 11 40.30 -04 23 03.2 c 691
2006-04-29 04:35:37 C 13 11 39.39 -04 22 59.1 c 691
2006-04-29 04:50:25 C 13 11 38.28 -04 22 52.8 c 691
2006-05-19 04:32:01 C 12 45 47.52 -02 24 29.5 r G96
2006-05-19 04:42:21 C 12 45 47.05 -02 24 27.1 r G96
2006-05-19 04:52:48 C 12 45 46.65 -02 24 26.0 r G96
2006-05-19 05:03:07 C 12 45 46.26 -02 24 24.3 r G96
2006-05-19 07:30:10 C 12 45 40.32 -02 24 03.8 r G96
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2004-10-05 09:21:00 -78944 0.5 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)