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578 Happelia (A905 VJ)
Classification: Main-belt Asteroid          SPK-ID: 2000578
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 111 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1923251193479538 2.8259e-08  
a 2.751530011330007 8.3974e-09 au
q 2.222341673511487 7.6112e-08 au
i 6.148787252365747 3.7885e-06 deg
node 29.395411983885 2.7071e-05 deg
peri 261.3117561300277 2.8768e-05 deg
M 142.9940759507961 1.1101e-05 deg
tp 2458338.321077463309
(2018-Aug-07.82107746)
4.9859e-05 TDB
period 1667.09292345255
4.56
7.6317e-06
2.089e-08
d
yr
n .2159447712455284 9.8856e-10 deg/d
Q 3.280718349148527 1.0012e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3110  
   data-arc span      41803 days (114.45 yr)  
   first obs. used      1905-11-02  
   last obs. used      2020-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45622  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:08:30  

Additional Information
 Earth MOID = 1.21653 au 
 Jupiter MOID = 1.94745 au 
 T_jup = 3.310 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.4   n/a MPO265958  
diameter diameter 69.29 km 2.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 10.061 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Robinson, L. (2002) Minor Planet Bull. 29, 30-31.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2008) Minor Planet Bull. 35, 163-167.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.0769   0.005 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
SMASSII spectral type spec_B Xc   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

578 Happelia (A905 VJ)          Discovered 1905-Nov-01 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1906-Apr-12 21:32 00:01 Jupiter 1.94404223594364 1.94404188181537 1.9440425900718 2.20768558653244 2.0006179645287 2417313.397546958 1.40344779368933 42.5129375636417 18.3547001491035 -72.0467612401262 1852261.64811985 T 111 CATAB v2.0f-lin.ifort 2020-May-20 01:08:41 2020-May-20 01:08
1965-Jul-23 05:58 < 00:01 Jupiter 1.95256844208826 1.95256812437876 1.95256875979765 2.25427561081445 2.05284199210636 2438964.748766974 0.624123061867886 40.6222126668059 9.91393811274599 -76.7062527688511 2583809.74345863 T 111 CATAB v2.0f-lin.ifort 2020-May-20 01:08:41 2020-May-20 01:08
2024-Nov-01 15:47 < 00:01 Jupiter 1.96206001422323 1.96205970028775 1.9620603281586 2.30582770836932 2.11031755659244 2460616.157752773 0.228821032925311 39.4274021506742 6.10208220856725 -77.2542897938648 2893795.52700135 T 111 CATAB v2.0f-lin.ifort 2020-May-20 01:08:41 2020-May-20 01:08
2084-Feb-12 13:17 < 00:01 Jupiter 1.97220479670249 1.97220441306736 1.97220518033761 2.3600744444811 2.17048183216892 2482268.053141383 0.981413717725412 38.3959243050046 9.21923956048366 -78.3938806382202 2092459.30752555 T 111 CATAB v2.0f-lin.ifort 2020-May-20 01:08:41 2020-May-20 01:08
2143-May-27 07:02 00:02 Jupiter 1.98250215139328 1.98250162533927 1.98250267744706 2.41415918611549 2.23017176866921 2503920.792956871 1.76448597785382 38.4703474050848 12.7008559419272 -82.6275137583755 1461223.66311583 T 111 CATAB v2.0f-lin.ifort 2020-May-20 01:08:41 2020-May-20 01:08

Alternate Designations
 A905 VJ = 1958 HN = A899 KA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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