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
2004-05-24 23:21:21 C 16 13 32.40 -20 38 48.2 r A13
2004-05-24 23:23:22 C 16 13 32.27 -20 38 49.2 r A13
2004-05-24 23:28:23 C 16 13 31.86 -20 38 49.6 r A13
2004-05-24 23:29:56 C 16 13 31.76 -20 38 49.4 r A13
2004-05-25 22:40:46 C 16 11 55.14 -20 39 13.9 r A16
2004-05-25 22:43:01 C 16 11 54.94 -20 39 13.6 r A16
2004-05-25 22:49:25 C 16 11 54.45 -20 39 13.5 r A16
2004-05-25 23:14:21 C 16 11 52.24 -20 39 13.8 r A16
2004-05-25 23:20:43 C 16 11 52.10 -20 39 13.0 r A16
2004-05-28 14:31:03 C 16 07 11.93 -20 39 46.9 r 428
2004-05-28 14:35:28 C 16 07 11.61 -20 39 46.5 r 428
2004-05-28 14:45:05 C 16 07 10.71 -20 39 47.0 r 428
2004-05-29 07:43:11 C 16 05 52.23 -20 40 22.4 c 926
2004-05-29 07:45:53 C 16 05 51.97 -20 40 22.7 c 926
2004-05-29 07:48:39 C 16 05 51.70 -20 40 22.5 c 926
2004-05-30 15:09:02 C 16 03 21.905 -20 40 19.85 r 413
2004-05-30 15:11:42 C 16 03 21.671 -20 40 19.85 r 413
2004-05-30 15:14:22 C 16 03 21.445 -20 40 19.79 r 413
2004-06-04 23:32:42 C 15 52 21.88 -20 41 41.1 r J87
2004-06-04 23:35:51 C 15 52 21.58 -20 41 40.8 r J87
2004-06-04 23:39:02 C 15 52 21.29 -20 41 40.5 r J87
2004-06-05 22:49:52 C 15 50 15.06 -20 41 44.3 r 941
2004-06-05 22:51:00 C 15 50 14.95 -20 41 44.3 r 941
2004-06-05 22:52:08 C 15 50 14.84 -20 41 44.4 r 941
2004-06-05 22:53:17 C 15 50 14.68 -20 41 44.5 r 941
2004-06-05 22:56:42 C 15 50 14.28 -20 41 45.5 r 941
2004-06-07 01:39:14 C 15 47 46.40 -20 41 25.1 r 859
2004-06-07 01:43:16 C 15 47 45.92 -20 41 25.0 r 859
2004-06-07 01:44:36 C 15 47 45.77 -20 41 24.8 r 859
2004-06-07 01:47:46 C 15 47 45.45 -20 41 25.2 r 859
2004-06-07 13:19:52 C 15 46 40.643 -20 41 19.93 r 413
2004-06-07 13:22:02 C 15 46 40.426 -20 41 19.95 r 413
2004-06-07 13:24:11 C 15 46 40.203 -20 41 19.96 r 413
2004-06-09 13:05:19 C 15 42 09.05 -20 41 19.1 r E12
2004-06-09 13:15:09 C 15 42 08.06 -20 41 19.5 r E12
2004-06-09 13:25:01 C 15 42 06.92 -20 41 18.4 r E12
2004-06-09 13:34:52 C 15 42 06.01 -20 41 19.7 r E12
2004-06-10 12:24:57 C 15 39 54.45 -20 41 20.5 r 428
2004-06-11 05:18:20 C 15 38 16.38 -20 41 47.2 19.4 c 704
2004-06-11 06:01:51 C 15 38 11.90 -20 41 46.1 18.9 c 704
2004-06-11 06:03:57 C 15 38 11.68 -20 41 45.7 r 448
2004-06-11 06:11:19 C 15 38 10.92 -20 41 45.6 r 448
2004-06-11 06:16:23 C 15 38 10.42 -20 41 45.3 18.9 c 704
2004-06-11 06:19:42 C 15 38 10.05 -20 41 45.5 r 448
2004-06-12 12:47:57 C 15 35 11.79 -20 41 14.2 r E12
2004-06-12 12:56:10 C 15 35 10.95 -20 41 14.0 r E12
2004-06-12 13:04:21 C 15 35 10.04 -20 41 14.1 r E12
2004-06-12 13:12:33 C 15 35 09.20 -20 41 13.9 r E12
2004-06-14 05:24:10 C 15 31 12.73 -20 41 45.2 18.8 c 704
2004-06-14 05:38:27 C 15 31 11.21 -20 41 45.1 19.1 c 704
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)