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
2020-12-06 09:54:55 C 04 05 44.78 +33 44 47.9 V T08
2020-12-06 10:13:48 C 04 05 43.24 +33 44 52.3 V T08
2020-12-08 09:28:10 C 04 01 53.34 +33 55 43.9 V T05
2020-12-08 09:34:50 C 04 01 52.75 +33 55 45.1 V T05
2020-12-08 09:44:07 C 04 01 52.02 +33 55 47.2 V T05
2020-12-08 10:02:09 C 04 01 50.48 +33 55 51.1 V T05
2020-12-13 03:41:37 C 03 52 45.11 +34 18 38.9 V 703
2020-12-13 03:49:48 C 03 52 44.45 +34 18 40.2 V 703
2020-12-13 03:57:59 C 03 52 43.80 +34 18 42.6 V 703
2020-12-13 04:06:10 C 03 52 43.09 +34 18 43.3 V 703
2020-12-14 08:46:27 C 03 50 28.13 +34 23 46.6 V T08
2020-12-14 08:58:24 C 03 50 27.22 +34 23 48.3 V T08
2020-12-14 09:04:30 C 03 50 26.75 +34 23 49.2 V T08
2020-12-14 09:21:34 C 03 50 25.36 +34 23 52.5 V T08
2020-12-18 06:50:18 C 03 43 17.10 +34 38 20.8 V G96
2020-12-18 06:57:13 C 03 43 16.56 +34 38 21.8 V G96
2020-12-18 07:04:05 C 03 43 16.06 +34 38 22.6 V G96
2020-12-18 07:10:58 C 03 43 15.53 +34 38 23.5 V G96
2020-12-20 03:47:27 C 03 39 58.88 +34 44 21.4 V 703
2020-12-20 03:55:32 C 03 39 58.31 +34 44 22.6 V 703
2020-12-20 04:03:37 C 03 39 57.75 +34 44 23.2 V 703
2020-12-22 08:08:36 C 03 36 14.72 +34 50 39.4 V T08
2020-12-22 08:18:36 C 03 36 13.98 +34 50 40.9 V T08
2020-12-22 08:24:08 C 03 36 13.58 +34 50 41.5 V T08
2020-12-22 09:15:13 C 03 36 09.94 +34 50 47.0 V T08
2020-12-24 06:30:56 C 03 33 03.42 +34 55 37.9 V T05
2020-12-24 06:34:13 C 03 33 03.17 +34 55 38.7 V T05
2020-12-24 06:42:18 C 03 33 02.61 +34 55 39.2 V T05
2020-12-24 07:19:18 C 03 33 00.11 +34 55 43.0 V T05
2021-01-02 07:22:37 C 03 19 48.86 +35 13 10.6 V T05
2021-01-02 07:27:15 C 03 19 48.59 +35 13 11.4 V T05
2021-01-02 07:37:10 C 03 19 48.08 +35 13 11.2 V T05
2021-01-02 07:51:42 C 03 19 47.19 +35 13 12.0 V T05
2021-01-05 08:42:20 C 03 16 01.52 +35 17 36.3 V T05
2021-01-05 08:47:00 C 03 16 01.28 +35 17 36.7 V T05
2021-01-05 08:54:18 C 03 16 00.91 +35 17 36.5 V T05
2021-01-05 09:22:23 C 03 15 59.46 +35 17 38.5 V T05
2021-01-06 03:51:39 C 03 15 05.96 +35 18 41.1 V G96
2021-01-06 03:59:16 C 03 15 05.59 +35 18 41.3 V G96
2021-01-06 04:06:50 C 03 15 05.20 +35 18 41.6 V G96
2021-01-06 04:14:23 C 03 15 04.83 +35 18 42.3 V G96
2021-01-06 07:10:41 C 03 14 56.38 +35 18 53.2 V T05
2021-01-06 07:18:39 C 03 14 56.04 +35 18 53.6 V T05
2021-01-06 07:23:58 C 03 14 55.76 +35 18 53.7 V T05
2021-01-06 07:38:34 C 03 14 55.07 +35 18 54.1 V T05
2021-01-07 06:58:14 C 03 13 49.73 +35 20 11.8 V T08
2021-01-07 07:02:53 C 03 13 49.53 +35 20 11.7 V T08
2021-01-07 07:18:45 C 03 13 48.71 +35 20 13.3 V T08
2021-01-07 07:26:42 C 03 13 48.34 +35 20 13.2 V T08
2021-01-16 06:43:24 C 03 05 34.27 +35 31 34.8 V T08
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)