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
2024-01-13 02:14:20 C 22 56 04.168 +01 22 49.48 V 703
2024-01-13 02:17:42 C 22 56 04.646 +01 22 52.54 V 703
2024-01-13 02:21:05 C 22 56 04.988 +01 22 54.73 V 703
2024-01-13 02:24:27 C 22 56 05.363 +01 22 57.94 V 703
2024-01-17 02:11:43 C 23 07 00.469 +02 44 14.06 V 703
2024-01-17 02:14:59 C 23 07 00.844 +02 44 16.15 V 703
2024-01-17 02:18:14 C 23 07 01.243 +02 44 19.68 V 703
2024-01-17 02:21:30 C 23 07 01.643 +02 44 21.95 V 703
2024-01-27 05:22:54 C 23 33 56.578 +06 03 00.22 V T05
2024-01-27 05:27:28 C 23 33 57.134 +06 03 04.97 V T05
2024-01-27 05:35:17 C 23 33 57.924 +06 03 10.37 V T05
2024-01-27 05:49:35 C 23 33 59.419 +06 03 22.61 V T05
2025-08-30 14:22:13 C 06 21 43.190 +35 14 11.65 V T08
2025-08-30 14:24:34 C 06 21 43.442 +35 14 11.36 V T05
2025-08-30 14:26:15 C 06 21 43.613 +35 14 11.76 V T08
2025-08-30 14:29:56 C 06 21 43.973 +35 14 12.70 V T05
2025-08-30 14:37:00 C 06 21 44.693 +35 14 13.45 V T08
2025-08-30 14:37:14 C 06 21 44.707 +35 14 13.09 V T05
2025-08-30 14:57:50 C 06 21 46.850 +35 14 16.19 V T05
2025-08-30 14:57:57 C 06 21 46.879 +35 14 16.26 V T08
2025-09-03 04:05:26 C 06 30 33.110 +35 24 21.06 V R17
2025-09-03 04:23:48 C 06 30 35.002 +35 24 23.22 V R17
2025-09-03 04:44:11 C 06 30 37.082 +35 24 25.38 V R17
2025-09-03 05:04:34 C 06 30 39.149 +35 24 27.97 V R17
2025-09-26 03:28:40 B 07 25 03.566 +36 02 27.10 V R51
2025-09-26 03:35:48 C 07 25 04.277 +36 02 27.31 V R17
2025-09-26 03:41:42 B 07 25 04.826 +36 02 29.22 V R51
2025-09-26 03:55:28 B 07 25 06.163 +36 02 28.18 V R51
2025-09-26 03:56:09 C 07 25 06.216 +36 02 28.28 V R17
2025-09-26 04:16:31 C 07 25 08.138 +36 02 29.11 V R17
2025-09-26 04:36:56 C 07 25 09.982 +36 02 31.02 V R17
2025-09-30 04:05:40 B 07 34 05.532 +36 05 36.85 V R51
2025-09-30 04:26:31 B 07 34 07.476 +36 05 35.92 V R51
2025-09-30 04:48:10 B 07 34 09.274 +36 05 37.61 V R51
2025-09-30 11:37:25 C 07 34 47.222 +36 05 50.42 V V00
2025-09-30 11:45:28 C 07 34 47.957 +36 05 50.75 V V00
2025-09-30 11:53:30 C 07 34 48.688 +36 05 51.00 V V00
2025-09-30 12:01:32 C 07 34 49.415 +36 05 51.29 V V00
2025-10-01 11:46:24 C 07 37 00.728 +36 06 31.00 V G96
2025-10-01 11:56:20 C 07 37 01.621 +36 06 31.32 V G96
2025-10-01 12:06:13 C 07 37 02.521 +36 06 31.72 V G96
2025-10-01 12:16:08 C 07 37 03.418 +36 06 32.08 V G96
2025-10-01 13:59:33 C 07 37 13.061 +36 06 35.60 V T05
2025-10-01 14:04:49 C 07 37 13.538 +36 06 36.04 V T05
2025-10-01 14:09:37 C 07 37 13.963 +36 06 36.04 V T05
2025-10-01 14:18:36 C 07 37 14.803 +36 06 36.11 V T05
2025-10-04 14:31:43 C 07 43 49.498 +36 08 25.69 V T08
2025-10-04 14:35:40 C 07 43 49.848 +36 08 26.66 V T08
2025-10-04 14:50:34 C 07 43 51.216 +36 08 26.41 V T08
2025-10-04 15:10:47 C 07 43 52.942 +36 08 27.35 V T08
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)