2063 Bacchus (1977 HB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3494289066 ± 2.00e+00
Semi-major axis (a)1.0779986113 AU ± 3.00e+00
Inclination (i)9.43469494° ± 4.00e+00
Long. of Asc. Node (Ω)33.03636030° ± 5.00e+00
Arg. of Perihelion (ω)55.35066867° ± 6.00e+00
Mean Anomaly (M)234.78705685° ± 2.00e-05
Mean Motion (n)0.8806127601°/day ± 3.68e+00
Perihelion dist (q)0.70131474 AU ± 2.91e+00
Aphelion dist (Q)1.45468249 AU ± 4.59e+00
Orbital Period1.11925051 yr ± 4.67e+00
NGA Modelr2
A2-3.62707582e-06 AU/d²
Physical Parameters
H (abs. magnitude)17.21
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.501″
Uncertainty0
Orbit TypeApollo
MOID0.067153 AU
Observations Used1463
Radar Obs Used7
Gaia Obs Used54
Oppositions4
Arc Total1977-2025
First Observation Used1977-04-24
Last Observation Used2025-06-15
Observations (1537)
Date Type RA Dec Mag Band Observatory
2025-05-20 04:44:07 C 09 18 35.896 +18 58 47.46 V 703
2025-05-20 04:50:35 C 09 18 37.174 +18 58 38.57 V 703
2025-05-20 04:53:50 C 09 18 37.775 +18 58 32.12 V 703
2025-05-21 04:58:54 C 09 23 25.868 +18 23 18.74 V 703
2025-05-21 05:05:29 C 09 23 27.164 +18 23 07.19 V 703
2025-05-21 05:08:46 C 09 23 27.830 +18 23 03.37 V 703
2025-05-21 06:32:13 C 09 23 44.393 +18 21 05.15 V T08
2025-05-21 06:37:35 C 09 23 45.422 +18 20 56.69 V T08
2025-05-21 06:48:23 C 09 23 47.558 +18 20 40.96 V T08
2025-05-21 07:08:25 C 09 23 51.482 +18 20 11.29 V T08
2025-05-23 06:14:44 C 09 32 59.215 +17 11 21.80 V T05
2025-05-23 06:19:20 C 09 33 00.084 +17 11 15.61 V T05
2025-05-23 06:28:12 C 09 33 01.747 +17 11 02.44 V T05
2025-05-23 06:42:54 C 09 33 04.450 +17 10 40.80 V T05
2025-05-24 05:59:40 C 09 37 28.130 +16 36 48.17 V T08
2025-05-24 06:05:05 C 09 37 29.160 +16 36 39.13 V T08
2025-05-24 06:13:07 C 09 37 30.605 +16 36 27.29 V T08
2025-05-24 06:31:37 C 09 37 34.037 +16 36 00.76 V T08
2025-05-25 05:58:44 C 09 41 54.989 +16 01 58.01 V T08
2025-05-25 06:03:26 C 09 41 55.834 +16 01 50.70 V T08
2025-05-25 06:11:23 C 09 41 57.228 +16 01 38.86 V T08
2025-05-25 06:27:32 C 09 42 00.226 +16 01 15.38 V T08
2025-05-27 04:11:13 C 09 50 16.008 +14 55 12.00 V 703
2025-05-27 04:14:33 C 09 50 16.602 +14 55 08.76 V 703
2025-05-27 04:21:12 C 09 50 17.808 +14 54 57.85 V 703
2025-05-29 06:05:32 C 09 58 59.366 +13 43 57.68 V T05
2025-05-29 06:10:07 C 09 59 00.199 +13 43 52.75 V T05
2025-05-29 06:17:56 C 09 59 01.469 +13 43 41.09 V T05
2025-05-29 06:34:37 C 09 59 04.286 +13 43 17.36 V T05
2025-06-14 07:04:58 C 10 57 40.402 +05 13 14.59 V T05
2025-06-14 07:10:13 C 10 57 41.126 +05 13 08.40 V T05
2025-06-14 07:18:07 C 10 57 42.206 +05 12 57.85 V T05
2025-06-14 07:32:33 C 10 57 44.112 +05 12 41.26 V T05
2025-06-15 03:57:41 C 11 00 30.359 +04 47 47.40 V 703
2025-06-15 04:01:03 C 11 00 30.830 +04 47 44.34 V 703
2025-06-15 04:04:25 C 11 00 31.367 +04 47 40.88 V 703
2025-06-15 04:07:47 C 11 00 31.806 +04 47 36.31 V 703
Radar Observations (19)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1996-03-22 18:00:00 384093.223 2.3 Hz 8510 -14 -14
1996-03-22 20:10:00 87190665 15 us 8510 -14 -14
1996-03-22 22:50:00 86769151 2 us 8510 -14 -14
1996-03-22 22:50:00 371573.7 2 Hz 8510 -14 -14
1996-03-22.750000 38409322 200 Hz 8510 253 253
1996-03-22.840278 8719066500 15000 us 8510 253 253
1996-03-22.951389 8676915100 2000 us 8510 253 253
1996-03-24 17:50:00 324347 2 Hz 8510 -14 -14
1996-03-24 22:10:00 79673366 1 us 8510 -14 -14
1996-03-24 23:00:00 79562896 10 us 8510 -14 -14
1996-03-24.743056 32434700 200 Hz 8510 253 253
1996-03-24.923611 7967336600 1000 us 8510 253 253
1996-03-24.958333 7956289600 10000 us 8510 253 253
1996-03-29 19:30:00 96363 2 Hz 8510 -14 -14
1996-03-29.812500 9636300 200 Hz 8510 253 253
2012-09-13 11:31:00 -76858.4372 0.3 Hz 2380 -1 -1
2012-09-13 12:27:00 248520536.79 4 us 2380 -1 -1
2012-09-14 12:21:00 251520636.56 4 us 2380 -1 -1
2015-04-18 23:59:00 217913625.88 4 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)