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
2006-05-19 07:37:49 C 12 45 39.99 -02 24 02.7 r G96
2006-05-19 07:45:35 C 12 45 39.70 -02 24 01.9 r G96
2006-05-19 07:53:23 C 12 45 39.42 -02 24 01.0 r G96
2016-01-30 08:04:11 C 08 10 46.62 +23 38 01.6 q G96
2016-01-30 08:22:40 C 08 10 45.30 +23 38 04.9 q G96
2016-01-30 08:31:54 C 08 10 44.71 +23 38 06.8 q G96
2016-02-05 07:19:10 C 08 01 40.745 +24 03 19.08 L F51
2016-02-05 07:39:44 C 08 01 39.488 +24 03 22.12 L F51
2016-02-05 08:00:42 C 08 01 38.186 +24 03 25.28 L F51
2016-02-10 06:47:49 C 07 54 58.290 +24 19 12.63 L F51
2016-02-10 07:06:41 C 07 54 57.244 +24 19 14.89 L F51
2016-02-10 07:45:09 C 07 54 55.167 +24 19 19.34 L F51
2017-04-27 14:05:19 C 19 53 55.298 -20 59 28.65 L F51
2017-04-27 14:17:26 C 19 53 57.240 -20 59 24.90 L F51
2017-04-27 14:29:34 C 19 53 59.179 -20 59 20.99 L F51
2017-04-27 14:41:40 C 19 54 01.094 -20 59 17.33 L F51
2017-10-21 09:48:01 C 07 32 02.69 +21 23 41.6 U G96
2017-10-21 09:57:04 C 07 32 03.07 +21 23 42.2 U G96
2017-10-21 10:06:11 C 07 32 03.43 +21 23 42.0 U G96
2017-10-21 10:15:14 C 07 32 03.76 +21 23 42.8 U G96
2017-10-27 10:19:02 C 07 37 24.72 +21 27 39.2 U G96
2017-10-27 10:26:55 C 07 37 24.90 +21 27 39.5 U G96
2017-10-27 10:34:33 C 07 37 25.14 +21 27 39.2 U G96
2017-10-27 10:42:13 C 07 37 25.34 +21 27 39.7 U G96
2017-11-14 09:44:06 C 07 41 11.62 +22 09 54.7 U G96
2017-11-14 09:52:24 C 07 41 11.48 +22 09 55.5 U G96
2017-11-14 10:00:39 C 07 41 11.35 +22 09 57.6 U G96
2017-11-14 10:08:53 C 07 41 11.19 +22 09 59.0 U G96
2017-11-27 07:20:39 C 07 31 05.78 +23 11 32.6 U G96
2017-11-27 07:28:14 C 07 31 05.40 +23 11 34.1 U G96
2017-11-27 07:35:50 C 07 31 04.98 +23 11 36.4 U G96
2017-11-27 07:43:35 C 07 31 04.56 +23 11 38.3 U G96
2017-12-15 08:14:55 C 07 00 35.82 +24 54 43.2 U G96
2017-12-15 08:22:30 C 07 00 35.15 +24 54 44.7 U G96
2017-12-15 08:30:02 C 07 00 34.50 +24 54 46.1 U G96
2017-12-15 08:37:37 C 07 00 33.82 +24 54 48.1 U G96
2017-12-28 06:37:08 C 06 33 39.64 +25 47 23.5 U G96
2017-12-28 06:44:39 C 06 33 39.01 +25 47 24.4 U G96
2017-12-28 06:52:08 C 06 33 38.35 +25 47 25.2 U G96
2017-12-28 06:59:38 C 06 33 37.69 +25 47 26.1 U G96
2018-01-22 04:51:46 C 05 56 58.81 +26 10 44.1 U G96
2018-01-22 04:59:54 C 05 56 58.56 +26 10 44.4 U G96
2018-01-22 05:08:01 C 05 56 58.20 +26 10 44.7 U G96
2018-01-22 05:16:07 C 05 56 57.96 +26 10 44.2 U G96
2019-04-26 08:46:37 C 15 09 44.31 -15 09 36.0 V G96
2019-04-26 08:54:00 C 15 09 43.87 -15 09 34.8 V G96
2019-04-26 09:01:23 C 15 09 43.45 -15 09 33.2 V G96
2019-04-26 09:08:47 C 15 09 43.01 -15 09 31.6 V G96
2019-05-03 08:20:48 C 14 59 19.68 -14 34 19.6 V G96
2019-05-03 08:28:09 C 14 59 19.17 -14 34 18.0 V 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)