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
2022-08-05 00:28:14 C 03 40 02.009 +28 09 15.02 X L10
2022-08-05 02:35:49 C 03 40 12.900 +28 10 50.22 X L10
2022-08-05 02:36:19 C 03 40 12.945 +28 10 50.57 X L10
2022-08-05 02:36:49 C 03 40 12.977 +28 10 51.06 X L10
2022-08-05 02:37:19 C 03 40 13.033 +28 10 51.54 X L10
2022-08-05 02:37:49 C 03 40 13.072 +28 10 51.67 X L10
2022-08-05 02:38:19 C 03 40 13.117 +28 10 51.95 X L10
2022-08-05 02:38:49 C 03 40 13.149 +28 10 52.46 X L10
2022-08-05 02:39:19 C 03 40 13.194 +28 10 52.90 X L10
2022-08-05 02:39:49 C 03 40 13.242 +28 10 53.27 X L10
2022-08-05 02:40:19 C 03 40 13.287 +28 10 53.70 X L10
2022-08-06 14:21:17 C 03 43 17.532 +28 37 02.66 U F52
2022-08-06 14:28:34 C 03 43 18.145 +28 37 08.04 U F52
2022-08-06 14:35:51 C 03 43 18.757 +28 37 13.38 U F52
2022-08-06 14:43:08 C 03 43 19.366 +28 37 18.74 U F52
2022-08-10 14:09:54 C 03 51 24.191 +29 45 56.07 U F52
2022-08-10 14:10:48 C 03 51 24.263 +29 45 56.73 U F52
2022-08-10 14:25:38 C 03 51 25.474 +29 46 07.41 U F52
2022-08-10 14:26:33 C 03 51 25.553 +29 46 08.07 U F52
2022-08-10 14:41:18 C 03 51 26.757 +29 46 18.70 U F52
2022-08-10 14:42:13 C 03 51 26.833 +29 46 19.35 U F52
2022-08-13 13:19:53 C 03 57 17.839 +30 36 01.91 V T08
2022-08-13 13:33:44 C 03 57 18.989 +30 36 12.67 V T08
2022-08-13 13:38:20 C 03 57 19.339 +30 36 15.55 V T08
2022-08-13 13:55:32 C 03 57 20.683 +30 36 28.22 V T08
2022-08-15 12:39:55 C 04 01 09.067 +31 08 54.13 V T05
2022-08-15 12:44:32 C 04 01 09.487 +31 08 57.30 V T05
2022-08-15 12:55:39 C 04 01 10.301 +31 09 05.15 V T05
2022-08-15 13:12:55 C 04 01 11.669 +31 09 17.71 V T05
2022-08-16 14:03:55 C 04 03 11.578 +31 26 25.30 V T08
2022-08-16 14:24:09 C 04 03 13.128 +31 26 40.34 V T08
2022-08-16 14:45:29 C 04 03 14.839 +31 26 54.10 V T08
2022-08-16 15:05:55 C 04 03 16.421 +31 27 09.11 V T08
2022-08-18 13:03:19 C 04 06 55.846 +31 58 33.13 V T05
2022-08-18 13:07:52 C 04 06 56.213 +31 58 36.41 V T05
2022-08-18 13:23:01 C 04 06 57.382 +31 58 46.85 V T05
2022-08-18 13:32:22 C 04 06 58.090 +31 58 53.15 V T05
2022-08-19 14:01:29 C 04 08 53.400 +32 15 31.50 V T05
2022-08-19 14:06:05 C 04 08 53.722 +32 15 34.85 V T05
2022-08-19 14:12:37 C 04 08 54.233 +32 15 39.46 V T05
2022-08-19 14:57:29 C 04 08 57.634 +32 16 10.13 V T05
2022-08-20 14:16:47 C 04 10 46.558 +32 31 55.70 V T05
2022-08-20 14:21:21 C 04 10 46.894 +32 31 59.12 V T05
2022-08-20 14:52:28 C 04 10 49.229 +32 32 20.04 V T05
2022-08-20 15:02:21 C 04 10 49.978 +32 32 27.28 V T05
2022-08-24 14:12:43 C 04 18 03.610 +33 36 08.21 V T08
2022-08-24 14:46:58 C 04 18 06.074 +33 36 31.18 V T08
2022-08-24 14:51:33 C 04 18 06.398 +33 36 34.20 V T08
2022-08-24 15:12:28 C 04 18 07.958 +33 36 47.63 V T08
2022-08-25 14:06:04 C 04 19 49.627 +33 51 58.36 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)