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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 92 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1192903403996908 2.5847e-08  
a 2.712172510805667 7.5504e-09 au
q 2.388636528768975 6.8752e-08 au
i 8.641246386514583 2.6939e-06 deg
node 170.0358526715071 2.4149e-05 deg
peri 211.4741620606269 2.8178e-05 deg
M 254.0152206257662 1.6335e-05 deg
tp 2457880.803101433806
(2017-May-07.30310143)
7.4968e-05 JED
period 1631.452341903037
4.47
6.8127e-06
1.865e-08
d
yr
n .2206622839990971 9.2145e-10 deg/d
Q 3.035708492842359 8.4511e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1610  
   data-arc span      55679 days (152.44 yr)  
   first obs. used      1863-04-11  
   last obs. used      2015-09-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .6059  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:01:54  

Additional Information
 Earth MOID = 1.39337 au 
 Jupiter MOID = 2.42985 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 LCDB (Rev. 2015-December); Warner et al., 2009 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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