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
2022-11-23 09:54:52 C 03 33 27.126 +51 49 29.24 V G96
2022-11-26 06:52:07 C 03 24 27.245 +51 22 38.17 V T08
2022-11-26 07:02:12 C 03 24 25.920 +51 22 34.00 V T08
2022-11-26 07:04:57 C 03 24 25.546 +51 22 32.81 V T08
2022-11-26 07:21:50 C 03 24 23.314 +51 22 25.68 V T08
2022-11-26 07:24:34 C 03 24 22.966 +51 22 24.64 V T08
2022-11-26 07:27:14 C 03 24 22.613 +51 22 23.45 V T08
2022-11-26 07:31:18 C 03 24 22.073 +51 22 21.68 V T08
2022-11-26 08:05:27 C 03 24 17.525 +51 22 07.10 V T08
2022-12-11 06:10:24 C 02 47 20.321 +47 33 58.18 V G96
2022-12-11 06:17:52 C 02 47 19.734 +47 33 52.49 V G96
2022-12-11 06:25:20 C 02 47 19.151 +47 33 46.69 V G96
2022-12-11 06:32:48 C 02 47 18.578 +47 33 40.79 V G96
2022-12-14 07:38:38 C 02 42 20.436 +46 36 59.18 V T05
2022-12-14 08:28:56 C 02 42 17.102 +46 36 19.58 V T05
2022-12-14 08:44:46 C 02 42 16.066 +46 36 07.06 V T05
2022-12-14 08:49:07 C 02 42 15.782 +46 36 03.53 V T05
2022-12-14 08:55:42 C 02 42 15.341 +46 35 58.34 V T05
2022-12-14 09:00:16 C 02 42 15.055 +46 35 55.10 V T05
2022-12-14 09:22:14 C 02 42 13.591 +46 35 37.21 V T05
2022-12-21 04:53:53 C 02 34 21.493 +44 27 02.02 V V00
2022-12-21 05:01:03 C 02 34 21.216 +44 26 56.47 V V00
2022-12-21 05:08:11 C 02 34 20.942 +44 26 50.86 V V00
2022-12-21 05:15:20 C 02 34 20.665 +44 26 45.20 V V00
2022-12-26 03:09:02 C 02 31 15.092 +42 56 56.80 V 703
2022-12-26 03:17:13 C 02 31 14.923 +42 56 50.71 V 703
2022-12-26 03:25:36 C 02 31 14.732 +42 56 44.48 V 703
2022-12-26 03:34:28 C 02 31 14.552 +42 56 38.00 V 703
2023-01-04 17:51:12 C 02 30 32.04 +40 17 54.7 V M26
2023-01-04 17:59:22 C 02 30 32.08 +40 17 50.0 V M26
2023-01-07 19:48:57 C 02 31 34.52 +39 32 46.8 V Z45
2023-01-07 19:55:50 C 02 31 34.64 +39 32 42.7 V Z45
2023-01-07 20:04:24 C 02 31 34.76 +39 32 37.7 V Z45
2023-01-07 20:12:59 C 02 31 34.90 +39 32 32.8 V Z45
2023-01-07 20:21:35 C 02 31 35.03 +39 32 27.4 V Z45
2023-01-09 05:13:40 C 02 32 13.067 +39 13 21.43 V 703
2023-01-09 05:21:16 C 02 32 13.211 +39 13 17.11 V 703
2023-01-09 05:28:53 C 02 32 13.319 +39 13 12.72 V 703
2023-01-09 05:36:29 C 02 32 13.474 +39 13 08.08 V 703
2023-01-10 05:35:38 C 02 32 45.359 +38 59 34.55 V G96
2023-01-10 05:43:09 C 02 32 45.517 +38 59 30.23 V G96
2023-01-10 05:50:42 C 02 32 45.676 +38 59 25.98 V G96
2023-01-10 05:58:13 C 02 32 45.834 +38 59 21.59 V G96
2023-01-13 02:49:38 C 02 34 34.957 +38 22 13.48 V 703
2023-01-13 02:58:44 C 02 34 35.173 +38 22 09.05 V 703
2023-01-13 03:16:46 C 02 34 35.699 +38 21 59.04 V 703
2023-01-13 10:19:54 C 02 34 47.700 +38 18 18.61 V T05
2023-01-13 10:45:59 C 02 34 48.458 +38 18 04.50 V T05
2023-01-13 10:51:45 C 02 34 48.571 +38 18 01.44 V T05
2023-01-14 06:38:11 C 02 35 25.579 +38 07 58.80 V T05
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)