1580 Betulia (1950 KA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4876047101 ± 2.00e+00
Semi-major axis (a)2.1949743206 AU ± 3.00e+00
Inclination (i)52.18777815° ± 4.00e+00
Long. of Asc. Node (Ω)62.22480892° ± 5.00e+00
Arg. of Perihelion (ω)159.71713922° ± 6.00e+00
Mean Anomaly (M)80.26713945° ± 3.89e-05
Mean Motion (n)0.3030875594°/day ± 6.21e-01
Perihelion dist (q)1.12469450 AU ± 4.65e+00
Aphelion dist (Q)3.26525414 AU ± 6.26e+00
Orbital Period3.25195229 yr ± 6.67e+00
NGA Modelr2
A21.40142724e-06 AU/d²
Physical Parameters
H (abs. magnitude)14.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.282″
Uncertainty0
Orbit TypeAmor
MOID0.133321 AU
Observations Used1981
Radar Obs Used10
Gaia Obs Used93
Oppositions46
Arc Total1950-2016
First Observation Used1950-05-22
Last Observation Used2025-12-13
Observations (2056)
Date Type RA Dec Mag Band Observatory
2025-02-17 09:23:16 C 18 12 30.053 -01 41 00.82 V W68
2025-02-26 15:18:23 C 18 37 13.898 -06 51 15.30 V T05
2025-02-26 15:25:48 C 18 37 14.743 -06 51 26.06 V T05
2025-02-26 15:44:22 C 18 37 16.843 -06 51 53.06 V T05
2025-02-26 15:58:42 C 18 37 18.454 -06 52 13.87 V T05
2025-03-08 14:56:29 C 19 05 38.342 -12 50 01.54 V T08
2025-03-08 15:21:41 C 19 05 41.429 -12 50 40.99 V T08
2025-03-08 15:27:00 C 19 05 42.079 -12 50 49.06 V T08
2025-03-08 15:35:43 C 19 05 43.123 -12 51 02.52 V T08
2025-03-10 02:45:51 C 19 10 05.479 -13 45 43.42 V M22
2025-03-10 02:56:29 C 19 10 06.778 -13 46 00.12 V M22
2025-03-10 03:26:03 C 19 10 10.457 -13 46 46.34 V M22
2025-03-16 08:55:05 C 19 29 28.819 -17 45 20.45 V W68
2025-03-16 09:01:02 C 19 29 29.609 -17 45 30.02 V W68
2025-03-16 09:47:33 C 19 29 35.741 -17 46 46.16 V W68
2025-03-16 14:55:16 C 19 30 16.934 -17 55 12.72 V T08
2025-03-16 15:12:35 C 19 30 19.238 -17 55 40.73 V T08
2025-03-16 15:32:43 C 19 30 21.862 -17 56 13.63 V T08
2025-03-19 09:16:13 C 19 39 17.659 -19 43 46.31 V W68
2025-03-19 09:18:54 C 19 39 18.029 -19 43 50.38 V W68
2025-03-19 09:22:18 C 19 39 18.482 -19 43 56.06 V W68
2025-03-19 09:24:59 C 19 39 18.845 -19 44 00.60 V W68
2025-03-19 09:30:21 C 19 39 19.596 -19 44 09.78 V W68
2025-03-19 09:32:36 C 19 39 19.879 -19 44 13.06 V W68
2025-03-19 09:38:00 C 19 39 20.626 -19 44 22.16 V W68
2025-03-19 09:40:07 C 19 39 20.906 -19 44 25.66 V W68
2025-03-19 09:52:14 C 19 39 22.558 -19 44 45.89 V W68
2025-03-20 09:20:10 C 19 42 38.002 -20 23 31.67 V W68
2025-03-20 09:22:56 C 19 42 38.398 -20 23 36.13 V W68
2025-03-20 09:26:55 C 19 42 38.933 -20 23 42.83 V W68
2025-03-23 09:02:40 C 19 52 49.202 -22 22 55.24 V W68
2025-03-23 09:07:27 C 19 52 49.906 -22 23 03.34 V W68
2025-03-23 09:32:23 C 19 52 53.455 -22 23 45.46 V W68
2025-03-23 09:37:00 C 19 52 54.110 -22 23 53.38 V W68
2025-03-26 03:16:36 C 20 02 33.492 -24 14 13.06 V M22
2025-03-26 03:21:10 C 20 02 34.145 -24 14 20.72 V M22
2025-03-26 03:25:43 C 20 02 34.836 -24 14 28.54 V M22
2025-03-26 03:33:24 C 20 02 35.974 -24 14 41.50 V M22
2025-03-26 03:49:13 C 20 02 38.309 -24 15 08.17 V M22
2025-03-28 09:03:51 C 20 10 42.888 -25 45 04.97 V W68
2025-03-28 09:09:51 C 20 10 43.800 -25 45 15.19 V W68
2025-03-28 09:34:52 C 20 10 47.594 -25 45 57.67 V W68
2025-03-28 09:45:37 C 20 10 49.210 -25 46 16.00 V W68
2025-03-29 02:34:57 C 20 13 25.262 -26 14 43.55 V M22
2025-03-29 02:39:40 C 20 13 25.997 -26 14 51.79 V M22
2025-03-29 02:47:05 C 20 13 27.127 -26 15 04.46 V M22
2025-03-29 03:03:16 C 20 13 29.630 -26 15 31.86 V M22
2025-03-30 01:17:36 C 20 16 58.030 -26 53 10.90 V M22
2025-03-30 01:53:07 C 20 17 03.610 -26 54 11.34 V M22
2025-03-30 02:23:16 C 20 17 08.309 -26 55 02.86 V M22
Radar Observations (22)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1976-05-18 05:56:50 225980 7 Hz 2380 -1 -1
1976-05-18.247801 22598000 100 Hz 2380 251 251
1976-05-19 05:52:16 186012.5 7 Hz 2380 -1 -1
1976-05-19.244630 18601250 100 Hz 2380 251 251
1989-05-23 12:00:00 501134 20 Hz 8495 -14 -14
1989-05-23.500000 50113400 2000 Hz 8495 253 253
1989-05-26 01:42:00 185537450 12 us 2380 -1 -1
1989-05-26.070833 18553745000 12000 us 2380 251 251
1989-05-28 01:38:00 185094484 12 us 2380 -1 -1
1989-05-28.068056 18509448400 12000 us 2380 251 251
1989-05-29 00:20:00 -72175 5 Hz 2380 -1 -1
1989-05-29.013889 -7217500 500 Hz 2380 251 251
2002-05-28.997222 23747341100 10000 us 2380 251 251
2002-05-30 01:10:00 237420023 2 us 2380 -1 -1
2002-05-30 01:10:00 -16023.93 1 Hz 2380 -1 -1
2002-05-30.048611 23742002300 2000 us 2380 251 251
2002-06-01 00:57:00 240888928 2 us 2380 -1 -1
2002-06-01 00:57:00 -80205.3478 1 Hz 2380 -1 -1
2002-06-01.039583 24088892800 2000 us 2380 251 251
2002-06-03 00:09:00 248731233 2 us 2380 -1 -1
2002-06-03 00:09:00 -138436.315 1 Hz 2380 -1 -1
2002-06-03.006250 24873123300 2000 us 2380 251 251
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)