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
2019-10-18 17:51:54 C 21 21 13.53 +04 34 14.4 V 089
2019-10-18 17:55:19 C 21 21 13.85 +04 34 16.4 V 089
2019-10-19 03:27:06 C 21 22 09.27 +04 39 47.6 V 703
2019-10-19 03:34:38 C 21 22 09.97 +04 39 51.8 V 703
2019-10-19 03:42:11 C 21 22 10.66 +04 39 56.2 V 703
2019-10-19 03:49:44 C 21 22 11.37 +04 40 00.6 V 703
2019-10-19 06:13:46 C 21 22 25.452 +04 41 26.76 U F51
2019-10-19 06:17:46 C 21 22 25.825 +04 41 28.03 U F51
2019-10-19 06:31:11 C 21 22 27.056 +04 41 35.67 U F51
2019-10-19 06:35:11 C 21 22 27.421 +04 41 37.88 U F51
2019-10-19 06:48:33 C 21 22 28.648 +04 41 45.48 U F51
2019-10-19 06:52:34 C 21 22 29.014 +04 41 47.72 U F51
2019-10-19 07:05:57 C 21 22 30.241 +04 41 55.31 U F51
2019-10-19 07:10:03 C 21 22 30.615 +04 41 57.56 U F51
2019-10-19 16:12:26 C 21 23 23.06 +04 47 01.8 q C97
2019-10-19 16:14:38 C 21 23 23.31 +04 47 03.0 q C97
2019-10-19 16:16:49 C 21 23 23.56 +04 47 04.1 q C97
2019-10-19 16:18:59 C 21 23 23.71 +04 47 05.5 q C97
2019-10-19 17:07:09 C 21 23 28.59 +04 47 25.6 V 089
2019-10-19 17:10:35 C 21 23 28.92 +04 47 27.4 V 089
2019-10-19 17:17:25 C 21 23 29.53 +04 47 31.6 V 089
2019-10-19 17:58:49 C 21 23 33.34 +04 47 54.6 V 089
2019-10-19 18:05:40 C 21 23 33.98 +04 47 58.4 V 089
2019-10-19 18:09:06 C 21 23 34.29 +04 48 00.3 V 089
2019-10-19 18:12:31 C 21 23 34.61 +04 48 02.2 V 089
2019-10-22 02:22:00 C 21 28 54.57 +05 18 17.0 V 703
2019-10-22 02:29:39 C 21 28 55.19 +05 18 20.9 V 703
2019-10-22 02:37:17 C 21 28 55.90 +05 18 24.6 V 703
2019-10-22 02:44:55 C 21 28 56.58 +05 18 28.5 V 703
2019-10-22 06:18:26 C 21 29 16.44 +05 20 22.5 V T05
2019-10-22 06:28:26 C 21 29 17.32 +05 20 27.5 V T05
2019-10-22 06:47:50 C 21 29 19.04 +05 20 37.6 V T05
2019-10-22 06:56:51 C 21 29 19.85 +05 20 42.2 V T05
2019-10-22 20:20:18 C 21 30 34.77 +05 27 26.9 q 160
2019-10-22 20:23:10 C 21 30 35.03 +05 27 28.4 q 160
2019-10-22 20:26:05 C 21 30 35.29 +05 27 29.9 q 160
2019-10-23 19:08:09 C 21 32 41.80 +05 38 51.7 q 160
2019-10-23 19:11:03 C 21 32 42.03 +05 38 52.9 q 160
2019-10-23 19:14:02 C 21 32 42.30 +05 38 54.6 q 160
2019-10-24 05:32:12 C 21 33 39.447 +05 44 04.15 U F52
2019-10-24 05:50:09 C 21 33 41.013 +05 44 12.93 U F52
2019-10-24 06:08:09 C 21 33 42.572 +05 44 22.55 U F52
2019-10-25 02:24:05 C 21 35 34.17 +05 54 04.9 V 703
2019-10-25 02:33:18 C 21 35 34.98 +05 54 09.3 V 703
2019-10-25 02:42:31 C 21 35 35.78 +05 54 13.7 V 703
2019-10-25 02:51:44 C 21 35 36.58 +05 54 18.1 V 703
2019-10-25 19:18:57 C 21 37 06.36 +06 02 02.3 q 160
2019-10-25 19:21:55 C 21 37 06.63 +06 02 03.7 q 160
2019-10-25 19:24:55 C 21 37 06.89 +06 02 05.1 q 160
2019-10-26 07:05:18 C 21 38 10.22 +06 07 36.8 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)