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
2015-01-01 03:04:56 C 12 04 27.09 +11 32 31.4 q 160
2015-01-01 03:06:51 C 12 04 27.31 +11 32 31.4 q 160
2015-01-02 04:22:35 C 12 06 46.90 +11 11 08.0 q 160
2015-01-02 04:24:23 C 12 06 47.04 +11 11 06.2 q 160
2015-01-02 04:26:04 C 12 06 47.20 +11 11 04.9 q 160
2015-01-06 03:17:09 C 12 15 37.97 +09 46 52.9 q 160
2015-01-06 03:19:11 C 12 15 38.14 +09 46 51.3 q 160
2015-01-06 03:21:13 C 12 15 38.32 +09 46 49.3 q 160
2015-01-06 04:46:16 C 12 15 46.21 +09 45 30.5 c A24
2015-01-06 04:47:18 C 12 15 46.32 +09 45 29.8 c A24
2015-01-19 14:01:48 C 12 47 27.685 +03 58 52.84 L F51
2015-01-19 14:21:20 C 12 47 29.647 +03 58 28.07 L F51
2015-01-19 14:40:45 C 12 47 31.595 +03 58 03.42 L F51
2015-01-19 15:00:14 C 12 47 33.546 +03 57 38.72 L F51
2015-01-22 22:01:31 C 12 56 00.40 +02 12 25.0 r 168
2015-01-22 22:54:27 C 12 56 06.05 +02 11 11.3 r 168
2015-01-22 22:59:16 C 12 56 06.58 +02 11 04.7 r 168
2015-02-05 09:12:11 C 13 35 54.38 -07 06 20.0 u H21
2015-02-05 09:14:53 C 13 35 54.76 -07 06 25.6 u H21
2015-02-05 09:17:35 C 13 35 55.13 -07 06 31.4 u H21
2015-02-05 09:20:17 C 13 35 55.50 -07 06 37.2 u H21
2015-02-05 09:25:35 C 13 35 56.24 -07 06 48.6 u H21
2015-02-05 09:28:13 C 13 35 56.60 -07 06 54.3 u H21
2015-02-05 09:30:52 C 13 35 56.96 -07 06 59.8 u H21
2015-02-05 09:33:31 C 13 35 57.33 -07 07 05.5 u H21
2015-02-05 09:36:10 C 13 35 57.70 -07 07 11.1 u H21
2015-02-05 11:16:56 C 13 36 11.63 -07 10 47.1 u H21
2015-02-05 11:19:30 C 13 36 11.98 -07 10 52.7 u H21
2015-02-05 11:22:04 C 13 36 12.33 -07 10 58.1 u H21
2015-02-05 11:24:39 C 13 36 12.69 -07 11 03.6 u H21
2015-02-05 11:27:13 C 13 36 13.04 -07 11 09.3 u H21
2015-02-05 11:29:47 C 13 36 13.40 -07 11 14.7 u H21
2015-02-05 11:32:22 C 13 36 13.76 -07 11 20.2 u H21
2015-02-05 11:34:56 C 13 36 14.12 -07 11 25.8 u H21
2015-02-05 11:37:30 C 13 36 14.48 -07 11 31.3 u H21
2015-02-05 11:40:05 C 13 36 14.83 -07 11 36.7 u H21
2015-02-05 11:43:25 C 13 36 15.30 -07 11 43.8 u H21
2015-02-07 08:56:50 C 13 42 56.20 -08 51 57.5 u H21
2015-02-07 09:00:07 C 13 42 56.68 -08 52 04.9 u H21
2015-02-07 09:03:08 C 13 42 57.13 -08 52 11.7 u H21
2015-02-07 09:05:53 C 13 42 57.53 -08 52 18.1 u H21
2015-02-07 09:08:38 C 13 42 57.93 -08 52 24.5 u H21
2015-02-07 09:11:22 C 13 42 58.32 -08 52 30.7 u H21
2015-02-07 09:14:06 C 13 42 58.72 -08 52 36.9 u H21
2015-02-07 09:16:52 C 13 42 59.12 -08 52 43.2 u H21
2015-02-07 09:19:03 C 13 42 59.44 -08 52 48.2 u H21
2015-02-07 09:21:27 C 13 42 59.79 -08 52 53.9 u H21
2015-02-07 10:30:12 C 13 43 09.86 -08 55 31.5 q H21
2015-02-07 10:34:35 C 13 43 10.51 -08 55 41.5 q H21
2015-02-07 10:38:57 C 13 43 11.14 -08 55 51.3 q H21
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)