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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08949135590759534 3.053e-08  
a 2.228179562075569 5.107e-09 au
q 2.028776751859835 6.7988e-08 au
i 2.391986771256557 3.2963e-06 deg
node 141.1977023417651 9.4903e-05 deg
peri 7.361682625373819 9.7596e-05 deg
M 37.69492951451711 2.2614e-05 deg
tp 2458473.295012037855
(2018-Dec-20.79501204)
7.6253e-05 TDB
period 1214.85293264008
3.33
4.1767e-06
1.144e-08
d
yr
n .2963321652586042 1.0188e-09 deg/d
Q 2.427582372291304 5.5641e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3102  
   data-arc span      36715 days (100.52 yr)  
   first obs. used      1919-02-08  
   last obs. used      2019-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42391  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:12:45  

Additional Information
 Earth MOID = 1.04053 au 
 Jupiter MOID = 2.56233 au 
 T_jup = 3.638 
[ 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 11.62   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 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 9.34 h n/a LCDB (Rev. 2019-January); 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/]
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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