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851 Zeissia (A916 GL)
Classification: Main-belt Asteroid          SPK-ID: 2000851
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08996209588616143 3.0617e-08  
a 2.228918658605379 5.208e-09 au
q 2.028400464517468 6.829e-08 au
i 2.393097471678067 3.2934e-06 deg
node 141.1652430834833 9.4441e-05 deg
peri 7.759851672780286 9.7075e-05 deg
M 155.7625223373101 2.2372e-05 deg
tp 2458474.603564649510
(2018-Dec-22.10356465)
7.5319e-05 TDB
period 1215.457440501574
3.33
4.26e-06
1.166e-08
d
yr
n .2961847844309887 1.0381e-09 deg/d
Q 2.429436852693291 5.6765e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3132  
   data-arc span      36969 days (101.22 yr)  
   first obs. used      1919-02-08  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42175  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:14:00  

Additional Information
 Earth MOID = 1.0396 au 
 Jupiter MOID = 2.55852 au 
 T_jup = 3.637 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.5   n/a MPO473773 IRAS observations used: 2
diameter diameter 12.642 km 0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.341 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Robinson, L. (2011) http://btboar.tripod.com/lightcurves/]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.335   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.859   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=5.53 deg.
U-B UB 0.482   0.048 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=5.53 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

851 Zeissia (A916 GL)          Discovered 1916-Apr-02 by Belyavskij, S. at Simeis
Discovered at Simeis during the First World War while Simeis was not in communication with the Rechen-Institut for long periods of time were given provisional designations containing the Greek letter SIGMA. These are here abbreviated S.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A916 GL = 1950 NS1 = 1950 PA1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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