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
2022-09-27 12:35:40 C 05 02 30.470 +42 27 19.76 V T08
2022-09-27 13:16:35 C 05 02 31.430 +42 27 47.81 V T08
2022-09-27 13:33:16 C 05 02 31.826 +42 27 58.97 V T08
2022-09-27 14:10:52 C 05 02 32.705 +42 28 24.20 V T08
2022-09-27 14:15:32 C 05 02 32.813 +42 28 27.44 V T08
2022-09-27 14:23:31 C 05 02 32.981 +42 28 32.48 V T08
2022-10-04 06:54:40 C 05 05 31.72 +44 15 31.7 V U55
2022-10-04 07:06:53 C 05 05 31.83 +44 15 40.2 V U55
2022-10-04 07:19:06 C 05 05 31.94 +44 15 48.8 V U55
2022-10-05 02:53:10 C 05 05 41.722 +44 28 58.91 X K74
2022-10-05 02:57:37 C 05 05 41.748 +44 29 02.36 X K74
2022-10-05 03:01:30 C 05 05 41.767 +44 29 04.81 X K74
2022-10-05 14:57:49 C 05 05 46.541 +44 37 10.34 V T08
2022-10-05 15:01:54 C 05 05 46.543 +44 37 13.12 V T08
2022-10-05 15:07:56 C 05 05 46.574 +44 37 16.90 V T08
2022-10-07 01:37:50 C 05 05 55.62 +45 00 20.9 X C95
2022-10-07 02:18:07 C 05 05 55.58 +45 00 47.8 X C95
2022-10-07 02:59:10 C 05 05 55.54 +45 01 16.0 X C95
2022-10-07 03:44:38 C 05 05 55.48 +45 01 46.8 X C95
2022-10-07 04:25:59 C 05 05 55.43 +45 02 15.1 X C95
2022-10-07 12:19:19 C 05 05 56.580 +45 07 35.15 V T05
2022-10-07 12:21:55 C 05 05 56.618 +45 07 36.80 V T05
2022-10-07 12:54:36 C 05 05 56.530 +45 07 58.94 V T05
2022-10-07 13:03:09 C 05 05 56.486 +45 08 04.70 V T05
2022-10-12 12:35:12 C 05 05 05.359 +46 28 00.16 V T08
2022-10-12 12:37:52 C 05 05 05.297 +46 28 01.52 V T08
2022-10-12 12:41:51 C 05 05 05.218 +46 28 04.37 V T08
2022-10-12 13:16:16 C 05 05 04.565 +46 28 27.62 V T08
2022-10-15 12:45:06 C 05 03 36.466 +47 15 38.88 V T05
2022-10-15 12:49:40 C 05 03 36.338 +47 15 42.08 V T05
2022-10-15 12:57:29 C 05 03 36.086 +47 15 47.34 V T05
2022-10-15 13:05:18 C 05 03 35.875 +47 15 52.16 V T05
2022-10-17 08:17:42 C 05 02 20.666 +47 43 53.04 V T08
2022-10-17 08:18:22 C 05 02 20.666 +47 43 53.54 V T08
2022-10-17 08:21:43 C 05 02 20.611 +47 43 55.81 V T08
2022-10-17 08:22:23 C 05 02 20.566 +47 43 56.32 V T08
2022-10-17 08:29:44 C 05 02 20.280 +47 44 01.32 V T08
2022-10-17 09:18:12 C 05 02 18.624 +47 44 34.12 V T08
2022-10-17 09:18:52 C 05 02 18.600 +47 44 34.51 V T08
2022-10-19 12:09:51 C 05 00 25.286 +48 17 08.41 V T05
2022-10-19 12:37:05 C 05 00 24.055 +48 17 25.84 V T05
2022-10-19 12:41:40 C 05 00 23.854 +48 17 28.82 V T05
2022-10-19 12:49:29 C 05 00 23.498 +48 17 33.79 V T05
2022-10-23 12:22:30 C 04 55 40.726 +49 16 13.98 V T05
2022-10-23 12:25:06 C 04 55 40.589 +49 16 15.89 V T05
2022-10-23 12:29:40 C 04 55 40.289 +49 16 18.19 V T05
2022-10-23 13:20:49 C 04 55 37.114 +49 16 48.76 V T05
2022-10-25 11:49:10 C 04 52 45.058 +49 43 48.14 V T08
2022-10-25 11:55:10 C 04 52 44.633 +49 43 51.56 V T08
2022-10-25 12:01:10 C 04 52 44.201 +49 43 55.24 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)