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
2019-02-22 10:39:59 S 05 33 25.25 +37 21 16.8 L C51
2019-02-22 12:14:14 S 05 33 26.13 +37 19 57.7 L C51
2019-02-22 15:22:44 S 05 33 27.89 +37 17 19.9 L C51
2019-02-22 18:31:03 S 05 33 29.78 +37 14 41.8 L C51
2019-02-22 21:39:33 S 05 33 31.68 +37 12 03.2 L C51
2019-02-22 23:12:46 C 05 33 32.03 +37 10 41.5 d B66
2019-02-22 23:55:41 C 05 33 32.43 +37 10 04.7 d B66
2019-02-24 08:03:26 C 05 33 56.90 +36 43 31.7 V T08
2019-02-24 08:08:19 C 05 33 56.95 +36 43 27.4 V T08
2019-02-24 08:26:19 C 05 33 57.16 +36 43 12.2 V T08
2019-02-24 08:32:35 C 05 33 57.21 +36 43 07.0 V T08
2019-02-24 08:33:14 C 05 33 57.25 +36 43 06.8 V T08
2019-02-24 08:53:08 C 05 33 57.46 +36 42 49.7 V T08
2019-02-24 20:57:27 C 05 34 08.84 +36 32 49.4 d B66
2019-02-24 21:58:33 C 05 34 09.69 +36 31 58.0 d B66
2019-02-25 19:08:19 C 05 34 32.07 +36 14 40.1 V K87
2019-02-25 19:15:22 C 05 34 32.18 +36 14 34.3 V K87
2019-02-25 19:22:23 C 05 34 32.29 +36 14 28.5 V K87
2019-02-26 04:29:35 C 05 34 42.51 +36 07 06.5 U I41
2019-02-26 04:55:45 C 05 34 42.93 +36 06 44.9 U I41
2019-02-26 06:35:27 C 05 34 44.61 +36 05 22.4 U I41
2019-02-26 06:38:45 C 05 34 44.66 +36 05 19.6 U I41
2019-02-27 19:28:11 C 05 35 33.04 +35 35 42.7 q K73
2019-02-27 19:47:59 C 05 35 33.44 +35 35 26.6 q K73
2019-02-27 19:59:51 C 05 35 33.67 +35 35 17.4 q K73
2019-02-27 20:11:43 C 05 35 33.92 +35 35 07.7 q K73
2019-02-27 20:23:34 C 05 35 34.20 +35 34 58.0 q K73
2019-02-27 20:35:26 C 05 35 34.42 +35 34 48.3 q K73
2019-02-27 22:01:18 C 05 35 36.30 +35 33 38.4 q K73
2019-02-28 07:54:14 C 05 35 50.92 +35 25 49.7 V T08
2019-02-28 08:08:02 C 05 35 51.23 +35 25 38.9 V T08
2019-02-28 08:22:44 C 05 35 51.54 +35 25 26.6 V T08
2019-02-28 08:25:42 C 05 35 51.61 +35 25 24.2 V T08
2019-02-28 18:04:27 C 05 36 07.07 +35 17 43.2 d L34
2019-02-28 18:06:23 C 05 36 07.13 +35 17 41.2 d L34
2019-02-28 18:10:12 C 05 36 07.24 +35 17 37.7 d L34
2019-03-02 18:42:40 C 05 37 30.03 +34 39 30.4 a 233
2019-03-02 18:48:35 C 05 37 30.18 +34 39 25.7 a 233
2019-03-02 18:53:40 C 05 37 30.33 +34 39 21.6 a 233
2019-03-02 19:00:23 C 05 37 30.51 +34 39 16.6 a 233
2019-03-02 19:06:27 C 05 37 30.68 +34 39 11.8 a 233
2019-03-04 12:26:29 C 05 38 51.95 +34 07 21.4 q D29
2019-03-04 12:46:52 C 05 38 52.61 +34 07 05.7 q D29
2019-03-04 13:07:14 C 05 38 53.24 +34 06 49.6 q D29
2019-03-05 03:05:27 C 05 39 23.17 +33 56 07.4 V G96
2019-03-05 03:22:00 C 05 39 23.76 +33 55 58.0 V G96
2019-03-05 03:30:16 C 05 39 24.03 +33 55 51.7 V G96
2019-03-08 01:33:17 C 05 42 08.68 +33 03 12.1 q W61
2019-03-08 02:23:43 C 05 42 10.73 +33 02 33.5 q W61
2019-03-09 00:23:23 C 05 43 07.93 +32 46 19.9 q W61
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)