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
2013-11-06 10:11:44 C 03 49 37.823 +00 55 29.21 L F51
2013-11-06 10:31:30 C 03 49 36.704 +00 55 30.83 L F51
2013-11-06 10:51:22 C 03 49 35.585 +00 55 32.35 L F51
2013-11-20 06:02:33 C 03 30 33.86 +01 33 45.7 u H21
2013-11-20 06:11:42 C 03 30 33.33 +01 33 46.4 u H21
2013-11-20 06:20:52 C 03 30 32.82 +01 33 47.8 u H21
2013-11-24 08:34:35 C 03 24 52.469 +01 49 50.78 L F51
2013-11-24 08:52:51 C 03 24 51.402 +01 49 54.05 L F51
2013-11-24 09:13:43 C 03 24 50.198 +01 49 57.69 L F51
2013-11-24 09:30:48 C 03 24 49.195 +01 50 00.65 L F51
2013-12-02 12:10:54 C 03 13 59.24 +02 28 06.4 q D29
2013-12-02 12:33:48 C 03 13 57.91 +02 28 11.1 q D29
2013-12-02 12:56:43 C 03 13 56.60 +02 28 15.8 q D29
2013-12-04 07:15:06 C 03 11 42.098 +02 37 37.29 L F51
2013-12-04 07:33:57 C 03 11 41.089 +02 37 41.54 L F51
2014-10-12 10:59:48 C 08 20 09.08 +49 36 08.9 q 703
2014-10-12 11:11:49 C 08 20 10.30 +49 36 17.6 q 703
2014-10-12 11:23:51 C 08 20 11.52 +49 36 25.3 q 703
2014-10-12 11:35:51 C 08 20 12.63 +49 36 33.0 q 703
2014-10-25 21:44:10 S 08 54 00.25 +53 27 34.1 L C51
2014-10-26 00:53:35 S 08 54 21.43 +53 30 01.7 L C51
2014-10-26 10:21:39 S 08 55 25.51 +53 37 23.9 L C51
2014-10-26 11:56:17 S 08 55 36.18 +53 38 39.6 L C51
2014-10-26 13:30:54 S 08 55 46.80 +53 39 52.7 L C51
2014-10-26 15:05:42 S 08 55 57.65 +53 41 05.5 L C51
2014-10-26 16:40:19 S 08 56 08.15 +53 42 20.9 L C51
2014-10-26 18:14:55 S 08 56 18.90 +53 43 34.6 L C51
2014-10-26 19:49:44 S 08 56 29.83 +53 44 49.2 L C51
2014-10-26 21:24:21 S 08 56 40.43 +53 46 02.6 L C51
2014-10-26 22:58:58 S 08 56 51.15 +53 47 18.0 L C51
2014-10-27 02:08:23 S 08 57 12.65 +53 49 44.4 L C51
2014-10-27 03:43:00 S 08 57 23.41 +53 51 00.2 L C51
2014-10-27 10:01:50 S 08 58 06.55 +53 55 59.2 L C51
2014-10-28 09:52:38 C 09 00 51.34 +54 14 53.9 q 703
2014-10-28 09:59:07 C 09 00 52.01 +54 14 59.4 q 703
2014-10-28 10:05:37 C 09 00 52.77 +54 15 04.6 q 703
2014-10-28 10:12:06 C 09 00 53.56 +54 15 09.5 q 703
2014-12-12 03:56:15 C 12 08 48.08 +70 19 03.2 c A24
2014-12-12 03:57:17 C 12 08 48.29 +70 19 03.8 c A24
2015-01-06 05:00:45 C 15 29 25.68 +74 22 14.3 c A24
2015-01-06 05:01:48 C 15 29 26.05 +74 22 14.1 c A24
2015-02-06 12:52:16 S 18 35 28.04 +71 07 24.7 L C51
2015-02-06 19:10:32 S 18 36 25.85 +71 05 40.5 L C51
2015-02-06 19:27:40 C 18 36 29.07 +71 05 34.4 o C94
2015-02-06 19:38:30 C 18 36 30.93 +71 05 31.5 o C94
2015-02-06 22:19:47 S 18 36 54.57 +71 04 48.8 L C51
2015-02-07 01:29:01 S 18 37 23.22 +71 03 57.6 L C51
2015-02-07 04:38:04 S 18 37 51.66 +71 03 06.1 L C51
2015-02-07 07:47:18 S 18 38 20.098 +71 02 15.07 L C51
2015-02-07 14:05:35 S 18 39 16.514 +71 00 33.62 L C51
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)