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
2004-10-01 09:48:29 C 06 04 38.10 +03 56 25.2 c 673
2004-10-01 09:52:50 C 06 04 37.29 +03 56 34.1 c 673
2004-10-01 10:05:15 C 06 04 34.97 +03 56 59.1 c 673
2004-10-01 10:19:55 C 06 04 32.22 +03 57 28.7 c 673
2004-10-02 01:57:35 C 06 01 53.56 +04 28 04.7 r 941
2004-10-02 01:58:13 C 06 01 53.44 +04 28 06.0 r 941
2004-10-02 01:58:52 C 06 01 53.32 +04 28 07.2 r 941
2004-10-02 01:59:31 C 06 01 53.21 +04 28 08.4 r 941
2004-10-02 02:58:51 C 06 01 40.90 +04 29 55.1 r 118
2004-10-02 03:00:35 C 06 01 40.68 +04 29 57.4 r 118
2004-10-02 03:05:41 C 06 01 39.78 +04 30 06.5 r 118
2004-10-02 09:23:15 C 06 00 40.26 +04 42 22.9 c 673
2004-10-02 09:36:14 C 06 00 37.96 +04 42 47.8 c 673
2004-10-02 09:53:54 C 06 00 34.82 +04 43 21.6 c 673
2004-10-02 10:07:05 C 06 00 32.46 +04 43 46.7 c 673
2004-10-14 17:14:38 C 05 20 17.64 +11 32 39.4 m 355
2004-10-14 17:25:03 C 05 20 16.21 +11 32 49.9 m 355
2004-10-14 17:29:51 C 05 20 15.49 +11 32 55.2 m 355
2004-10-14 17:33:50 C 05 20 14.95 +11 32 58.7 m 355
2004-10-16 18:53:21 C 05 14 21.04 +12 20 19.4 m 355
2004-10-16 18:59:12 C 05 14 20.25 +12 20 25.0 m 355
2004-10-16 19:05:20 C 05 14 19.48 +12 20 30.4 m 355
2004-10-16 19:15:11 C 05 14 18.17 +12 20 39.3 m 355
2004-10-30 23:00:05 C 04 36 12.45 +16 10 09.0 o 084
2004-11-02 09:33:50 C 04 30 02.72 +16 36 46.3 o 699
2004-11-02 09:58:43 C 04 29 59.86 +16 36 56.8 o 699
2004-11-02 10:23:38 C 04 29 57.05 +16 37 07.3 o 699
2004-11-02 10:48:33 C 04 29 54.19 +16 37 17.0 o 699
2004-11-04 23:35:57 C 04 23 43.66 +17 01 13.0 c A48
2004-11-04 23:39:03 C 04 23 43.32 +17 01 14.5 c A48
2004-11-04 23:42:10 C 04 23 43.00 +17 01 15.6 c A48
2004-11-05 11:45:25 C 04 22 28.72 +17 05 45.1 17.1 c 644
2004-11-05 12:05:26 C 04 22 26.57 +17 05 51.7 17.6 c 644
2004-11-05 12:21:49 C 04 22 24.82 +17 05 57.1 17.7 c 644
2004-11-06 09:39:41 C 04 20 19.03 +17 13 25.8 r H41
2004-11-06 09:41:25 C 04 20 18.83 +17 13 26.4 r H41
2004-11-06 09:43:12 C 04 20 18.65 +17 13 27.2 r H41
2004-11-06 09:44:40 C 04 20 18.48 +17 13 26.9 r H41
2004-11-06 09:47:15 C 04 20 18.20 +17 13 28.5 r H41
2004-11-07 06:10:29 C 04 18 21.46 +17 20 20.6 17.4 c 704
2004-11-07 06:27:45 C 04 18 19.62 +17 20 26.0 17.8 c 704
2004-11-07 06:45:02 C 04 18 17.79 +17 20 32.1 17.7 c 704
2004-11-07 07:02:19 C 04 18 15.93 +17 20 37.9 17.8 c 704
2004-11-07 07:19:50 C 04 18 14.09 +17 20 44.0 17.5 c 704
2004-11-09 07:41:28 C 04 13 37.43 +17 35 41.6 r H41
2004-11-09 07:43:45 C 04 13 37.24 +17 35 41.9 r H41
2004-11-09 07:46:18 C 04 13 36.97 +17 35 42.6 r H41
2004-11-09 07:48:26 C 04 13 36.75 +17 35 43.0 r H41
2004-11-09 07:50:37 C 04 13 36.50 +17 35 43.7 r H41
2004-11-10 14:11:08 C 04 10 47.69 +17 44 25.2 18.2 c 608
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)