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
2025-10-05 13:55:32 C 07 45 55.999 +36 08 58.34 V T05
2025-10-05 14:14:57 C 07 45 57.763 +36 08 58.92 V T08
2025-10-05 14:18:54 C 07 45 58.123 +36 08 58.92 V T08
2025-10-05 14:26:10 C 07 45 58.742 +36 08 59.60 V T08
2025-10-05 14:28:55 C 07 45 58.997 +36 08 59.71 V T05
2025-10-05 14:29:34 C 07 45 59.064 +36 08 58.88 V T05
2025-10-05 14:34:09 C 07 45 59.460 +36 08 59.50 V T05
2025-10-05 14:36:08 C 07 45 59.647 +36 08 59.78 V T05
2025-10-05 14:39:30 C 07 45 59.940 +36 08 59.46 V T05
2025-10-05 14:43:26 C 07 46 00.245 +36 08 59.35 V T05
2025-10-05 14:44:05 C 07 46 00.329 +36 08 59.24 V T05
2025-10-05 14:44:16 C 07 46 00.355 +36 08 59.86 V T08
2025-10-05 15:06:47 C 07 46 02.342 +36 09 00.50 V T05
2025-10-05 15:13:14 C 07 46 02.887 +36 09 00.32 V T05
2025-10-05 15:22:59 C 07 46 03.770 +36 09 01.58 V T08
2025-10-20 03:48:43 C 08 15 54.864 +36 16 32.88 V R17
2025-10-20 04:09:05 C 08 15 56.486 +36 16 33.56 V R17
2025-10-20 04:29:29 C 08 15 58.099 +36 16 34.50 V R17
2025-10-20 04:49:51 C 08 15 59.726 +36 16 35.15 V R17
2025-10-21 03:48:27 C 08 17 51.031 +36 17 11.87 V R17
2025-10-21 04:08:50 C 08 17 52.654 +36 17 12.77 V R17
2025-10-21 04:29:12 C 08 17 54.259 +36 17 13.60 V R17
2025-10-21 04:49:35 C 08 17 55.838 +36 17 14.21 V R17
2025-10-24 10:48:06 C 08 24 05.990 +36 19 38.03 V G96
2025-10-24 10:55:30 C 08 24 06.548 +36 19 38.39 V G96
2025-10-24 11:02:52 C 08 24 07.110 +36 19 38.68 V G96
2025-10-24 11:10:15 C 08 24 07.679 +36 19 38.96 V G96
2025-10-24 19:11:01 C 08 24 45.182 +36 19 53.42 W O18
2025-10-24 19:38:13 C 08 24 47.271 +36 19 54.82 W O18
2025-10-25 20:26:06 C 08 26 42.099 +36 20 48.97 W O18
2025-10-25 20:54:16 C 08 26 44.225 +36 20 50.37 W O18
2025-10-28 20:22:41 C 08 32 08.393 +36 23 46.45 W O18
2025-10-28 22:23:23 C 08 32 17.173 +36 23 52.85 W O18
2025-10-29 11:17:01 C 08 33 14.846 +36 24 27.97 V T05
2025-10-29 11:23:06 C 08 33 15.281 +36 24 27.94 V T05
2025-10-29 12:13:52 C 08 33 19.020 +36 24 31.72 V T05
2025-10-29 13:20:46 C 08 33 23.839 +36 24 35.71 V T05
2025-11-01 11:29:10 C 08 38 29.117 +36 28 12.64 X F51
2025-11-01 12:10:29 C 08 38 32.030 +36 28 15.69 X F51
2025-11-01 12:31:07 C 08 38 33.474 +36 28 17.12 X F51
2025-11-08 13:50:16 C 08 50 02.901 +36 40 21.23 X F52
2025-11-08 14:10:16 C 08 50 04.141 +36 40 23.17 X F52
2025-11-08 14:30:06 C 08 50 05.376 +36 40 25.13 X F52
2025-11-08 14:49:53 C 08 50 06.606 +36 40 26.99 X F52
2025-11-09 13:14:01 C 08 51 32.599 +36 42 27.00 V T08
2025-11-09 13:18:42 C 08 51 32.926 +36 42 27.25 V T08
2025-11-09 13:30:12 C 08 51 33.576 +36 42 28.26 V T08
2025-11-09 14:05:17 C 08 51 35.657 +36 42 32.54 V T08
2025-11-10 13:10:02 C 08 53 02.842 +36 44 42.40 V T08
2025-11-10 13:14:02 C 08 53 03.010 +36 44 43.55 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)