1620 Geographos (1951 RA)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3355121545 ± 2.00e+00
Semi-major axis (a)1.2457769668 AU ± 3.00e+00
Inclination (i)13.33577542° ± 4.00e+00
Long. of Asc. Node (Ω)337.14082621° ± 5.00e+00
Arg. of Perihelion (ω)277.01835526° ± 6.00e+00
Mean Anomaly (M)212.92032873° ± 2.36e-05
Mean Motion (n)0.7088458984°/day ± 2.56e+00
Perihelion dist (q)0.82780365 AU ± 3.19e+00
Aphelion dist (Q)1.66375028 AU ± 4.72e+00
Orbital Period1.39046623 yr ± 5.02e+00
NGA Modelr2
A23.55475120e-06 AU/d²
Physical Parameters
H (abs. magnitude)15.26
G (slope)0.15
Alternative Designations

1983 CY3

Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.276″
Uncertainty0
Orbit TypeApollo
MOID0.028806 AU
Observations Used9056
Radar Obs Used5
Gaia Obs Used104
Oppositions19
Arc Total1951-2017
First Observation Used1951-08-31
Last Observation Used2026-04-08
Observations (11927)
Date Type RA Dec Mag Band Observatory
2026-02-22 22:27:44 B 06 35 13.613 +36 18 55.51 X J51
2026-02-22 22:52:47 B 06 35 11.998 +36 18 28.12 X J51
2026-02-24 03:27:05 C 06 33 35.572 +35 47 24.54 V 703
2026-02-24 03:31:03 C 06 33 35.309 +35 47 20.54 V 703
2026-02-24 03:34:55 C 06 33 35.114 +35 47 16.19 V 703
2026-02-24 03:38:59 C 06 33 34.870 +35 47 11.62 V 703
2026-02-25 06:42:59 C 06 32 11.441 +35 17 44.99 V T08
2026-02-25 06:48:23 C 06 32 11.143 +35 17 38.98 V T08
2026-02-25 06:55:52 C 06 32 10.726 +35 17 30.88 V T08
2026-02-25 07:27:28 C 06 32 08.990 +35 16 56.17 V T08
2026-02-25 18:22:03 B 06 31 38.333 +35 04 50.88 X L65
2026-02-25 18:26:11 B 06 31 38.119 +35 04 46.38 X L65
2026-02-25 18:30:19 B 06 31 37.906 +35 04 41.88 X L65
2026-02-25 20:33:43 C 06 31 31.771 +35 02 27.74 Z C23
2026-02-25 22:22:14 C 06 31 26.362 +35 00 28.62 Z C23
2026-02-28 21:26:58 C 06 28 36.461 +33 42 48.74 Z C23
2026-02-28 22:33:58 C 06 28 34.003 +33 41 34.22 Z C23
2026-02-28 23:34:51 C 06 28 31.824 +33 40 26.83 Z C23
2026-03-02 05:03:34 C 06 27 37.050 +33 08 25.90 V 703
2026-03-02 05:06:55 C 06 27 36.920 +33 08 22.10 V 703
2026-03-02 05:13:34 C 06 27 36.702 +33 08 14.71 V 703
2026-03-02 17:40:35 B 06 27 16.82 +32 54 37.8 X G02
2026-03-02 17:47:55 B 06 27 16.58 +32 54 29.8 X G02
2026-03-02 17:55:15 B 06 27 16.36 +32 54 21.8 X G02
2026-03-02 19:30:26 C 06 27 13.642 +32 52 38.35 Z C23
2026-03-02 20:12:11 C 06 27 12.466 +32 51 52.27 Z C23
2026-03-02 22:55:10 B 06 27 07.666 +32 48 54.22 X Y84
2026-03-02 23:02:51 B 06 27 07.452 +32 48 45.76 X Y84
2026-03-02 23:12:26 B 06 27 07.176 +32 48 35.10 X Y84
2026-03-03 19:40:04 B 06 26 38.100 +32 26 24.58 X Y84
2026-03-03 19:45:28 B 06 26 37.951 +32 26 18.64 X Y84
2026-03-03 19:50:48 B 06 26 37.795 +32 26 12.77 X Y84
2026-03-03 21:34:41 C 06 26 35.006 +32 24 18.68 Z C23
2026-03-03 21:52:41 C 06 26 34.514 +32 23 58.88 Z C23
2026-03-03 21:53:51 C 06 26 34.428 +32 23 57.26 Z C23
2026-03-04 07:46:33 C 06 26 21.638 +32 13 25.03 V T05
2026-03-04 07:51:52 C 06 26 21.494 +32 13 19.02 V T05
2026-03-04 08:00:25 C 06 26 21.286 +32 13 09.77 V T05
2026-03-04 08:25:49 C 06 26 20.630 +32 12 41.72 V T05
2026-03-04 20:12:12 C 06 26 07.087 +31 59 50.21 Z C23
2026-03-04 20:26:59 C 06 26 06.734 +31 59 33.54 Z C23
2026-03-04 22:20:49 B 06 26 04.291 +31 57 30.60 X Y84
2026-03-04 22:23:31 B 06 26 04.224 +31 57 27.58 X Y84
2026-03-04 22:26:06 B 06 26 04.164 +31 57 24.73 X Y84
2026-03-05 07:32:54 C 06 25 54.370 +31 47 43.62 V T05
2026-03-05 07:41:29 C 06 25 54.173 +31 47 34.22 V T05
2026-03-05 07:46:08 C 06 25 54.067 +31 47 29.15 V T05
2026-03-05 07:58:44 C 06 25 53.779 +31 47 15.36 V T05
2026-03-05 08:03:20 C 06 25 53.690 +31 47 10.32 V T05
2026-03-05 08:03:59 C 06 25 53.669 +31 47 09.60 V T05
Radar Observations (12)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1983-02-27 05:00:00 161795 5 Hz 2380 -1 -1
1983-02-27.208333 16179500 500 Hz 2380 251 251
1983-02-28 05:04:00 142007628 30 us 2380 -1 -1
1983-02-28.211111 14200762800 30000 us 2380 251 251
1994-08-28 07:10:00 38936537.06 1.76 us 8510 -14 -14
1994-08-28 07:10:00 -364880.593 0.9 Hz 8510 -14 -14
1994-08-28.298611 3893653706 1760 us 8510 253 253
1994-08-29 04:40:00 42596456.4 1.13 us 8510 -14 -14
1994-08-29 04:40:00 -427851.027 0.2 Hz 8510 -14 -14
1994-08-29.194444 4259645640 1130 us 8510 253 253
1994-09-02 07:20:00 -615553.2 0.5 Hz 8510 -14 -14
1994-09-02.305556 -61555320 50 Hz 8510 253 253
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)