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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 90 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09025607827631883 3.9917e-08  
a 2.655279404713843 6.4196e-09 AU
q 2.415624298916493 1.0689e-07 AU
i 3.563452179001906 4.1611e-06 deg
node 45.79373631590866 9.398e-05 deg
peri 194.3303855407759 9.9952e-05 deg
M 54.70227487425747 3.4164e-05 deg
tp 2456560.358812444314
(2013-Sep-24.85881244)
0.00014982 JED
period 1580.388159702112
4.33
5.7313e-06
1.569e-08
d
yr
n .2277921394120395 8.2609e-10 deg/d
Q 2.894934510511193 6.999e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1348  
   data-arc span      55674 days (152.43 yr)  
   first obs. used      1861-01-31  
   last obs. used      2013-07-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .64372  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 13:11:51  

Additional Information
 Earth MOID = 1.40346 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 7.4 mag n/a MPO265954  
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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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.]
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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