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26 Proserpina
Classification: Main-belt Asteroid          SPK-ID: 2000026
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 103 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09061556348162313 2.8519e-08  
a 2.654206871475989 7.4187e-09 au
q 2.413694420220397 7.6097e-08 au
i 3.563973858836071 3.2896e-06 deg
node 45.78533206861599 6.5365e-05 deg
peri 194.1631197063332 6.8898e-05 deg
M 191.5813083542935 2.1963e-05 deg
tp 2458139.404598079512
(2018-Jan-20.90459808)
9.7162e-05 JED
period 1579.430719413295
4.32
6.6219e-06
1.813e-08
d
yr
n .2279302254762575 9.5562e-10 deg/d
Q 2.894719322731582 8.0909e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1607  
   data-arc span      56570 days (154.88 yr)  
   first obs. used      1861-01-31  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62382  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:30:29  

Additional Information
 Earth MOID = 1.40055 au 
 Jupiter MOID = 2.10035 au 
 T_jup = 3.380 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.5 mag n/a MPO347509  
diameter diameter 94.80 km 1.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 16
rotation period rot_per 13.110 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Scaltriti, F.; Zappala, V. (1979) Icarus 39, 124-130.]
[Ditteon, R.; Hawkins, S. (2007) Minor Planet Bul. 34, 59-64.]
[Fauerbach, M.; Marks, S.A.; Lucas, M.P. (2008) Minor Planet Bul. 35, 44-46.]
[Pilcher, F. (2008) Minor Planet Bul. 35, 135-138.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2013) Minor Planet Bul. 40, 189.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2015) Astron. Astrophys., in press.arXiv:1510.07422]
geometric albedo albedo 0.1966   0.007 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 16
B-V BV .891 mag .018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=4.17, mean=15.15, max.=21.44) deg.
U-B UB .525 mag .056 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=4.17, mean=15.15, max.=21.44) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B S   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)

26 Proserpina          Discovered 1853-May-05 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1935 KK = 1954 WD1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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