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
2019-01-31 09:36:45 C 05 49 42.60 +45 10 30.7 V T08
2019-01-31 09:52:41 C 05 49 41.29 +45 10 16.6 V T08
2019-02-03 19:17:55 C 05 44 01.29 +43 58 25.9 q K73
2019-02-03 19:31:08 C 05 44 00.27 +43 58 11.8 q K73
2019-02-04 09:17:02 C 05 43 09.49 +43 45 54.4 V T08
2019-02-04 09:32:57 C 05 43 08.47 +43 45 39.8 V T08
2019-02-04 09:41:51 C 05 43 07.92 +43 45 31.6 V T08
2019-02-04 17:14:34 C 05 42 42.10 +43 38 37.5 q 168
2019-02-04 18:28:24 C 05 42 37.63 +43 37 30.5 q 168
2019-02-04 20:04:55 C 05 42 31.89 +43 36 02.6 q 168
2019-02-06 23:09:53 C 05 39 51.15 +42 49 55.4 d Z35
2019-02-06 23:29:05 C 05 39 50.22 +42 49 39.2 d Z35
2019-02-06 23:48:13 C 05 39 49.04 +42 49 20.8 d Z35
2019-02-07 18:25:25 C 05 38 58.86 +42 32 28.7 q K73
2019-02-07 21:44:35 C 05 38 49.50 +42 29 26.9 d Z35
2019-02-07 22:03:33 C 05 38 48.52 +42 29 08.2 d Z35
2019-02-07 22:22:35 C 05 38 47.70 +42 28 50.2 d Z35
2019-02-12 09:04:52 C 05 35 08.81 +40 52 16.2 V T08
2019-02-12 09:16:32 C 05 35 08.47 +40 52 05.2 V T08
2019-02-12 09:33:46 C 05 35 07.98 +40 51 49.2 V T08
2019-02-13 18:31:42 C 05 34 24.63 +40 22 10.3 V B88
2019-02-13 19:06:04 C 05 34 23.82 +40 21 39.7 V B88
2019-02-13 19:16:54 C 05 34 23.54 +40 21 30.4 q 160
2019-02-13 19:19:57 C 05 34 23.47 +40 21 27.7 q 160
2019-02-13 19:23:01 C 05 34 23.39 +40 21 24.9 q 160
2019-02-13 19:40:27 C 05 34 23.02 +40 21 08.9 V B88
2019-02-14 20:19:47 C 05 33 56.65 +39 59 09.3 q 160
2019-02-14 20:22:37 C 05 33 56.60 +39 59 06.8 q 160
2019-02-14 20:25:29 C 05 33 56.55 +39 59 04.3 q 160
2019-02-15 20:18:39 C 05 33 36.48 +39 37 53.3 q 160
2019-02-15 20:21:33 C 05 33 36.44 +39 37 50.7 q 160
2019-02-15 20:24:29 C 05 33 36.40 +39 37 48.0 q 160
2019-02-16 08:29:47 C 05 33 27.85 +39 27 11.7 V T08
2019-02-16 08:47:44 C 05 33 27.60 +39 26 55.9 V T08
2019-02-16 08:49:03 C 05 33 27.54 +39 26 56.1 V T08
2019-02-16 08:56:04 C 05 33 27.49 +39 26 48.0 V T08
2019-02-16 08:56:44 C 05 33 27.52 +39 26 48.1 V T08
2019-02-16 09:15:18 C 05 33 27.24 +39 26 31.2 V T08
2019-02-16 09:15:58 C 05 33 27.23 +39 26 30.6 V T08
2019-02-16 09:22:19 C 05 33 27.16 +39 26 24.6 V T08
2019-02-16 20:16:55 C 05 33 21.47 +39 16 46.0 q 160
2019-02-16 20:19:47 C 05 33 21.43 +39 16 43.3 q 160
2019-02-16 20:22:43 C 05 33 21.37 +39 16 40.6 q 160
2019-02-18 20:01:14 C 05 33 06.19 +38 35 08.7 q 160
2019-02-18 20:04:08 C 05 33 06.18 +38 35 06.1 q 160
2019-02-18 20:07:03 C 05 33 06.18 +38 35 03.6 q 160
2019-02-21 22:06:21 S 05 33 18.99 +37 31 51.3 L C51
2019-02-22 01:14:51 S 05 33 20.48 +37 29 12.5 L C51
2019-02-22 07:31:40 S 05 33 23.59 +37 23 55.1 L C51
2019-02-22 09:05:55 S 05 33 24.42 +37 22 35.7 L C51
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)