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
2022-08-25 14:10:39 C 04 19 49.937 +33 52 01.67 V T08
2022-08-25 14:53:00 C 04 19 52.961 +33 52 30.11 V T08
2022-08-26 11:07:11 C 04 21 22.159 +34 05 49.13 V T05
2022-08-26 11:13:08 C 04 21 22.548 +34 05 53.27 V T05
2022-08-26 11:21:03 C 04 21 23.143 +34 05 58.38 V T05
2022-08-26 14:15:57 C 04 21 35.597 +34 07 56.57 V T08
2022-08-26 14:19:14 C 04 21 35.839 +34 07 58.66 V T08
2022-08-26 14:39:03 C 04 21 37.214 +34 08 12.01 V T08
2022-08-26 14:47:54 C 04 21 37.850 +34 08 18.46 V T08
2022-08-28 14:34:27 C 04 25 03.626 +34 39 43.42 V T05
2022-08-28 14:48:52 C 04 25 04.608 +34 39 53.32 V T05
2022-08-28 14:56:03 C 04 25 05.083 +34 39 57.92 V T05
2022-08-28 14:56:46 C 04 25 05.134 +34 39 58.46 V T08
2022-08-28 15:00:47 C 04 25 05.410 +34 40 01.31 V T08
2022-08-28 15:16:06 C 04 25 06.442 +34 40 11.82 V T08
2022-08-29 13:06:27 C 04 26 39.017 +34 54 28.66 V T08
2022-08-29 13:11:03 C 04 26 39.324 +34 54 31.64 V T08
2022-08-29 13:35:44 C 04 26 41.011 +34 54 47.59 V T08
2022-08-29 13:58:13 C 04 26 42.528 +34 55 03.11 V T08
2022-08-30 14:43:07 C 04 28 25.572 +35 11 13.85 V T05
2022-08-30 14:49:49 C 04 28 26.023 +35 11 17.99 V T05
2022-08-30 14:54:22 C 04 28 26.309 +35 11 21.26 V T05
2022-08-30 15:02:09 C 04 28 26.832 +35 11 26.23 V T05
2022-08-31 13:04:04 C 04 29 57.660 +35 25 46.81 V T05
2022-08-31 13:08:41 C 04 29 57.953 +35 25 50.12 V T05
2022-08-31 13:16:31 C 04 29 58.469 +35 25 55.49 V T05
2022-08-31 13:34:19 C 04 29 59.666 +35 26 07.30 V T05
2022-09-01 13:19:24 C 04 31 35.926 +35 41 34.48 V T08
2022-09-01 13:24:42 C 04 31 36.250 +35 41 38.15 V T08
2022-09-01 13:55:55 C 04 31 38.292 +35 41 58.56 V T08
2022-09-01 14:12:53 C 04 31 39.338 +35 42 09.76 V T05
2022-09-01 14:20:36 C 04 31 39.878 +35 42 14.62 V T05
2022-09-01 14:22:57 C 04 31 40.032 +35 42 16.24 V T08
2022-09-01 14:26:00 C 04 31 40.236 +35 42 18.18 V T05
2022-09-01 14:47:36 C 04 31 41.609 +35 42 32.69 V T05
2022-09-02 14:50:21 C 04 33 17.443 +35 58 09.91 V T08
2022-09-02 14:58:18 C 04 33 17.952 +35 58 15.24 V T08
2022-09-02 15:04:04 C 04 33 18.319 +35 58 19.13 V T08
2022-09-05 03:07:25 S 04 37 10.39 +36 37 10.2 L C51
2022-09-05 06:15:12 S 04 37 22.25 +36 39 11.3 L C51
2022-09-05 09:23:09 S 04 37 34.00 +36 41 14.2 L C51
2022-09-05 15:38:41 S 04 37 57.56 +36 45 15.5 L C51
2022-09-05 17:12:33 S 04 38 03.50 +36 46 16.8 L C51
2022-09-05 18:46:27 S 04 38 09.38 +36 47 17.4 L C51
2022-09-05 20:20:20 S 04 38 15.26 +36 48 18.5 L C51
2022-09-05 20:20:31 S 04 38 15.23 +36 48 19.9 L C51
2022-09-05 21:54:24 S 04 38 21.01 +36 49 19.1 L C51
2022-09-05 23:28:17 S 04 38 26.93 +36 50 19.8 L C51
2022-09-06 01:02:10 S 04 38 32.71 +36 51 21.5 L C51
2022-09-06 02:36:03 S 04 38 38.58 +36 52 21.1 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)