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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 84 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1192519743713143 2.5905e-08  
a 2.712044332091222 8.002e-09 AU
q 2.388627690906811 6.8874e-08 AU
i 8.641192378798683 2.7338e-06 deg
node 170.0383056061145 2.4755e-05 deg
peri 211.57894167 2.8813e-05 deg
M 165.613612806236 1.6295e-05 deg
tp 2456250.023437070121
(2012-Nov-18.52343707)
7.2581e-05 JED
period 1631.336688312275
4.47
7.22e-06
1.977e-08
d
yr
n .2206779278485078 9.7668e-10 deg/d
Q 3.035460973275632 8.9563e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1455  
   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      .61599  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:33:27  

Additional Information
 Earth MOID = 1.39503 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. 2014-Mar-01) 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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