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
2014-12-03 21:28:22 S 11 03 15.29 +19 16 13.6 L C51
2014-12-03 23:02:59 S 11 03 23.89 +19 15 19.9 L C51
2014-12-04 02:12:13 S 11 03 40.91 +19 13 30.7 L C51
2014-12-04 06:56:15 S 11 04 06.57 +19 10 47.8 L C51
2014-12-04 10:05:29 S 11 04 23.60 +19 08 59.1 L C51
2014-12-04 19:33:11 S 11 05 14.78 +19 03 30.3 L C51
2014-12-04 22:42:36 S 11 05 31.86 +19 01 40.4 L C51
2014-12-12 03:51:29 C 11 21 06.82 +17 17 14.4 c A24
2014-12-12 03:52:31 C 11 21 06.89 +17 17 14.0 c A24
2014-12-12 04:57:06 C 11 21 12.50 +17 16 34.0 c A24
2014-12-12 05:24:36 C 11 21 14.98 +17 16 16.3 q 160
2014-12-12 05:27:35 C 11 21 15.15 +17 16 14.4 q 160
2014-12-12 05:30:33 C 11 21 15.43 +17 16 12.5 q 160
2014-12-24 10:07:41 C 11 47 36.08 +13 57 40.4 q 703
2014-12-24 10:13:28 C 11 47 36.59 +13 57 36.3 q 703
2014-12-24 10:19:15 C 11 47 37.09 +13 57 32.0 q 703
2014-12-24 10:25:02 C 11 47 37.60 +13 57 27.7 q 703
2014-12-25 17:57:14 C 11 50 28.62 +13 33 57.0 u C15
2014-12-25 18:15:38 C 11 50 30.47 +13 33 43.5 u C15
2014-12-25 18:33:59 C 11 50 32.04 +13 33 29.7 u C15
2014-12-25 18:52:23 C 11 50 33.74 +13 33 16.4 u C15
2014-12-27 02:44:59 C 11 53 27.23 +13 09 00.5 q 160
2014-12-27 02:47:03 C 11 53 27.41 +13 08 59.4 q 160
2014-12-27 02:49:07 C 11 53 27.59 +13 08 57.4 q 160
2014-12-27 12:21:43 C 11 54 19.41 +13 01 38.9 R G45
2014-12-27 12:34:14 C 11 54 20.49 +13 01 29.2 R G45
2014-12-27 12:43:36 C 11 54 21.37 +13 01 23.1 R G45
2014-12-27 12:49:28 C 11 54 21.87 +13 01 17.0 R G45
2014-12-27 12:49:34 C 11 54 21.83 +13 01 17.0 R G45
2014-12-29 12:18:14 C 11 58 41.50 +12 23 56.3 R G45
2014-12-29 12:22:38 C 11 58 41.89 +12 23 52.6 R G45
2014-12-29 12:27:00 C 11 58 42.27 +12 23 49.0 R G45
2014-12-29 12:27:31 C 11 58 42.31 +12 23 48.8 R G45
2014-12-29 12:31:55 C 11 58 42.72 +12 23 45.3 R G45
2014-12-29 12:36:19 C 11 58 43.10 +12 23 41.8 R G45
2014-12-29 12:43:00 C 11 58 43.68 +12 23 36.4 R G45
2014-12-29 12:47:23 C 11 58 44.05 +12 23 32.9 R G45
2014-12-29 12:51:46 C 11 58 44.49 +12 23 29.7 R G45
2014-12-30 04:12:16 C 12 00 08.74 +12 11 07.0 q 160
2014-12-30 04:14:10 C 12 00 08.91 +12 11 05.3 q 160
2014-12-30 04:16:05 C 12 00 09.09 +12 11 03.9 q 160
2014-12-30 04:19:39 C 12 00 09.58 +12 11 02.1 q Z81
2014-12-30 04:40:53 C 12 00 11.44 +12 10 45.0 q Z81
2014-12-30 04:50:37 C 12 00 12.32 +12 10 37.1 q Z81
2014-12-31 21:59:56 C 12 03 58.89 +11 36 45.1 o C94
2014-12-31 22:02:02 C 12 03 59.08 +11 36 43.2 o C94
2014-12-31 22:04:41 C 12 03 59.28 +11 36 41.9 o C94
2014-12-31 22:06:56 C 12 03 59.49 +11 36 39.9 o C94
2014-12-31 23:51:04 C 12 04 08.78 +11 35 13.6 o C94
2014-12-31 23:53:15 C 12 04 08.99 +11 35 11.1 o C94
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)