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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 108 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1923511451940844 2.9061e-08  
a 2.750585066235494 8.5564e-09 au
q 2.22150687879135 7.8684e-08 au
i 6.150198603531083 3.8399e-06 deg
node 29.40143331160787 2.7891e-05 deg
peri 261.1973061919487 2.9578e-05 deg
M 56.71676035485645 1.0903e-05 deg
tp 2458337.990537147430
(2018-Aug-07.49053715)
4.9861e-05 TDB
period 1666.234214289591
4.56
7.7749e-06
2.129e-08
d
yr
n .2160560603741343 1.0081e-09 deg/d
Q 3.279663253679638 1.0202e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2906  
   data-arc span      41664 days (114.07 yr)  
   first obs. used      1905-11-02  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47135  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:09:06  

Additional Information
 Earth MOID = 1.21505 au 
 Jupiter MOID = 1.94654 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-January); 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 1.94404214395049 1.94404178472128 1.94404250317959 2.20768498793306 2.00061729366752 2417313.397532822 1.4304346263555 43.5747276118834 18.8710400828446 -72.4496641056493 1818892.99358011 T 108 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:20 2019-Dec-03 20:09
1965-Jul-23 05:58 < 00:01 Jupiter 1.95256834026402 1.95256801989653 1.9525686606314 2.25427482766757 2.05284112109382 2438964.748793899 0.630687752007894 41.7295091676295 10.1036236962154 -76.9702080164259 2567030.97089762 T 108 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:20 2019-Dec-03 20:09
2024-Nov-01 15:47 < 00:01 Jupiter 1.96205990063597 1.96205958403593 1.962060217236 2.30582691924143 2.11031668251311 2460616.157801123 0.24840459939109 40.5491776679649 6.14088801254466 -77.4641326526739 2885984.63520148 T 108 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:20 2019-Dec-03 20:09
2084-Feb-12 13:17 00:01 Jupiter 1.97220467003652 1.97220427938348 1.97220506068951 2.36007340678791 2.17048069112418 2482268.053233861 1.02139983969352 39.5437414756762 9.38673384884149 -78.6165740457864 2056940.42010701 T 108 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:20 2019-Dec-03 20:09
2143-May-27 07:02 00:02 Jupiter 1.98250201109484 1.98250147132409 1.98250255086537 2.41415824509586 2.23017073645857 2503920.793059026 1.82522342024235 39.708922240586 12.9482233363335 -82.8365299585954 1427576.22580107 T 108 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:20 2019-Dec-03 20:09

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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