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59 Elpis
Classification: Main-belt Asteroid          SPK-ID: 2000059
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 83 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1189676581221172 2.5979e-08  
a 2.713013707352467 8.1449e-09 AU
q 2.390252820135541 6.9211e-08 AU
i 8.639138079614989 2.7335e-06 deg
node 170.0389395876506 2.4815e-05 deg
peri 211.7117865089528 2.8879e-05 deg
M 121.346493058613 1.624e-05 deg
tp 2456250.324638139714
(2012-Nov-18.82463814)
7.2742e-05 JED
period 1632.21140782399
4.47
7.3502e-06
2.012e-08
d
yr
n .2205596641919934 9.9323e-10 deg/d
Q 3.035774594569393 9.1138e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1454  
   data-arc span      55223 days (151.19 yr)  
   first obs. used      1863-04-11  
   last obs. used      2014-06-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .6162  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:53:23  

Additional Information
 Earth MOID = 1.39544 AU 
 T_jup = 3.336 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.93 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 14
diameter diameter 164.80 km 6.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 14
rotation period rot_per 13.69 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Debehogne, H.; Surdej, A.; Surdej, J. (1978) Astron. Astrophys. Suppl. Ser. 33, 1-5.]
[Shevchenko, V.G.; Chiorny, V.G.; Kalashnikov, A.V.; Krugly, Yu.N.; et al. (1996) Astron. Astrophys. Suppl. Ser. 115, 475-479.]
[Stephens, R.D. (2006) Minor Planet Bul. 33, 100-101.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0438   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 14
B-V BV .662 mag .027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=17.13, mean=20.02, max.=21.48) deg.
U-B UB .285 mag .037 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=17.13, mean=20.02, max.=21.48) deg.
Tholen spectral type spec_T CP   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B B   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)

59 Elpis          Discovered 1860-Sep-12 by Chacornac, J. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A900 SC 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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