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
2026-01-27 17:17:07 C 07 48 49.57 +44 49 55.0 X C40
2026-01-27 17:19:02 C 07 48 49.25 +44 49 54.3 X C40
2026-01-27 17:20:59 C 07 48 48.95 +44 49 53.8 X C40
2026-01-27 17:22:55 C 07 48 48.62 +44 49 53.3 X C40
2026-01-27 17:24:44 C 07 48 48.34 +44 49 52.7 X C40
2026-01-27 17:26:26 C 07 48 48.07 +44 49 52.1 X C40
2026-01-27 17:28:09 C 07 48 47.80 +44 49 51.5 X C40
2026-01-27 17:29:52 C 07 48 47.51 +44 49 51.2 X C40
2026-01-27 17:31:34 C 07 48 47.24 +44 49 50.7 X C40
2026-01-27 17:33:28 C 07 48 46.95 +44 49 50.2 X C40
2026-01-27 17:35:21 C 07 48 46.64 +44 49 49.5 X C40
2026-01-27 17:37:05 C 07 48 46.37 +44 49 49.0 X C40
2026-01-28 00:39:59 B 07 47 40.08 +44 47 42.3 X X76
2026-01-28 00:42:21 B 07 47 39.65 +44 47 41.5 X X76
2026-01-28 00:44:26 B 07 47 39.30 +44 47 40.9 X X76
2026-01-29 02:27:18 B 07 43 37.740 +44 37 56.89 W X04
2026-01-29 02:34:23 B 07 43 36.602 +44 37 54.16 W X04
2026-01-29 02:42:17 B 07 43 35.352 +44 37 51.02 W X04
2026-01-29 08:30:29 C 07 42 41.273 +44 35 39.84 V T05
2026-01-29 08:34:27 C 07 42 40.630 +44 35 38.26 V T05
2026-01-29 08:39:01 C 07 42 39.893 +44 35 36.42 V T05
2026-01-29 08:46:14 C 07 42 38.714 +44 35 33.61 V T05
2026-01-29 21:14:47 C 07 40 41.99 +44 30 11.8 X C40
2026-01-29 21:17:22 C 07 40 41.57 +44 30 10.9 X C40
2026-01-29 21:19:56 C 07 40 41.15 +44 30 09.7 X C40
2026-01-29 21:22:32 C 07 40 40.74 +44 30 08.5 X C40
2026-01-29 21:25:06 C 07 40 40.33 +44 30 07.5 X C40
2026-01-29 21:27:41 C 07 40 39.92 +44 30 06.2 X C40
2026-01-29 21:30:15 C 07 40 39.50 +44 30 05.1 X C40
2026-01-29 21:32:49 C 07 40 39.11 +44 30 03.9 X C40
2026-01-29 21:35:17 C 07 40 38.71 +44 30 02.9 X C40
2026-01-29 21:37:38 C 07 40 38.33 +44 30 01.8 X C40
2026-01-29 21:39:59 C 07 40 37.96 +44 30 00.7 X C40
2026-01-29 21:42:21 C 07 40 37.58 +44 29 59.6 X C40
2026-01-29 23:34:44 B 07 40 20.786 +44 29 16.98 X J51
2026-01-29 23:44:50 B 07 40 19.157 +44 29 11.54 X J51
2026-01-29 23:57:59 B 07 40 17.033 +44 29 06.29 X J51
2026-01-31 23:33:10 C 07 32 59.590 +44 05 56.90 Z C23
2026-01-31 23:47:29 C 07 32 57.379 +44 05 49.24 Z C23
2026-02-01 00:11:08 C 07 32 53.681 +44 05 36.02 Z C23
2026-02-01 19:12:58 B 07 30 03.402 +43 55 10.79 V 160
2026-02-01 19:16:02 B 07 30 02.906 +43 55 09.01 V 160
2026-02-01 19:19:11 B 07 30 02.402 +43 55 07.01 V 160
2026-02-02 00:47:26 B 07 29 12.278 +43 52 06.24 X J51
2026-02-02 01:09:26 B 07 29 08.875 +43 51 53.50 X J51
2026-02-02 01:31:18 B 07 29 05.508 +43 51 40.28 X J51
2026-02-02 10:19:40 C 07 27 47.273 +43 46 33.38 V T08
2026-02-02 10:24:17 C 07 27 46.550 +43 46 30.58 V T08
2026-02-02 10:38:54 C 07 27 44.294 +43 46 21.54 V T08
2026-02-02 10:42:01 C 07 27 43.831 +43 46 19.45 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)