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
2021-12-25 12:03:54 S 12 37 58.298 +02 44 24.00 V C57
2021-12-25 12:03:54 s 1 -98960.196 0 +347901.20 2980.0 C57
2021-12-25 12:13:54 S 12 37 59.304 +02 44 13.74 V C57
2021-12-25 12:13:54 s 1 -99278.451 0 +347619.01 7810.0 C57
2021-12-25 12:23:54 S 12 38 00.528 +02 44 00.82 V C57
2021-12-25 12:23:54 s 1 -99596.410 0 +347335.80 1110.0 C57
2021-12-25 12:43:54 S 12 38 02.803 +02 43 40.84 V C57
2021-12-25 12:43:54 s 1 -100231.43 9 +346766.29 3110.0 C57
2021-12-25 12:53:54 S 12 38 04.013 +02 43 28.70 V C57
2021-12-25 12:53:54 s 1 -100548.50 6 +346480.00 1790.0 C57
2021-12-25 13:03:54 S 12 38 04.970 +02 43 13.94 V C57
2021-12-25 13:03:54 s 1 -100865.27 2 +346192.69 8910.0 C57
2021-12-25 13:13:54 S 12 38 06.334 +02 43 02.57 V C57
2021-12-25 13:13:54 s 1 -101181.73 7 +345904.35 4480.0 C57
2021-12-25 14:23:54 S 12 38 14.798 +02 41 42.79 V C57
2021-12-25 14:23:54 s 1 -103388.42 3 +343857.15 9280.0 C57
2021-12-25 14:33:54 S 12 38 15.778 +02 41 26.95 V C57
2021-12-25 14:33:54 s 1 -103702.42 4 +343560.57 2150.0 C57
2021-12-25 14:43:54 S 12 38 16.982 +02 41 15.47 V C57
2021-12-25 14:43:54 s 1 -104016.11 1 +343262.96 3410.0 C57
2021-12-25 14:53:54 S 12 38 18.238 +02 41 04.60 V C57
2021-12-25 14:53:54 s 1 -104329.48 2 +342964.32 3050.0 C57
2021-12-25 15:03:54 S 12 38 19.366 +02 40 53.69 V C57
2021-12-25 15:03:54 s 1 -104642.53 6 +342664.64 1070.0 C57
2021-12-25 15:13:54 S 12 38 20.508 +02 40 42.56 V C57
2021-12-25 15:13:54 s 1 -104955.27 2 +342363.94 7450.0 C57
2021-12-25 15:33:54 S 12 38 22.966 +02 40 16.21 V C57
2021-12-25 15:33:54 s 1 -105579.78 2 +341759.42 5280.0 C57
2021-12-25 15:43:54 S 12 38 23.993 +02 40 06.31 V C57
2021-12-25 15:43:54 s 1 -105891.55 4 +341455.60 6730.0 C57
2021-12-25 16:03:54 S 12 38 26.489 +02 39 44.03 V C57
2021-12-25 16:03:54 s 1 -106514.12 4 +340844.87 4630.0 C57
2021-12-25 16:23:54 S 12 38 28.474 +02 39 24.52 V C57
2021-12-25 16:23:54 s 1 -107135.38 6 +340229.99 5850.0 C57
2021-12-25 16:33:54 S 12 38 30.053 +02 39 10.30 V C57
2021-12-25 16:33:54 s 1 -107445.52 3 +339920.99 8940.0 C57
2021-12-25 16:53:54 S 12 38 32.347 +02 38 45.78 V C57
2021-12-25 16:53:54 s 1 -108064.80 1 +339299.88 40.0 C57
2021-12-25 17:13:54 S 12 38 34.822 +02 38 18.20 V C57
2021-12-25 17:13:54 s 1 -108682.74 3 +338674.61 4330.0 C57
2021-12-25 17:23:54 S 12 38 35.957 +02 38 09.92 V C57
2021-12-25 17:23:54 s 1 -108991.20 8 +338360.41 8900.0 C57
2021-12-25 17:33:54 S 12 38 37.116 +02 37 55.34 V C57
2021-12-25 17:33:54 s 1 -109299.33 6 +338045.17 1750.0 C57
2021-12-25 17:53:54 S 12 38 39.504 +02 37 32.99 V C57
2021-12-25 17:53:54 s 1 -109914.56 8 +337411.56 2260.0 C57
2021-12-25 18:03:54 S 12 38 40.735 +02 37 21.94 V C57
2021-12-25 18:03:54 s 1 -110221.67 0 +337093.19 9910.0 C57
2021-12-25 18:13:54 S 12 38 41.858 +02 37 09.23 V C57
2021-12-25 18:13:54 s 1 -110528.42 8 +336773.78 5800.0 C57
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)