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JPL Small-Body Database Browser
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852 Wladilena (A916 GM)
Classification: Main-belt Asteroid          SPK-ID: 2000852
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2742693238020562 4.3846e-08  
a 2.362929814828877 8.7982e-09 au
q 1.714850652324043 1.0312e-07 au
i 23.01184204969007 4.8287e-06 deg
node 27.2865205267016 1.2329e-05 deg
peri 282.2928987416365 1.5487e-05 deg
M 167.5944715329398 1.4227e-05 deg
tp 2458382.865072271930
(2018-Sep-21.36507227)
5.0445e-05 TDB
period 1326.705898758742
3.63
7.4098e-06
2.029e-08
d
yr
n .271348759613426 1.5155e-09 deg/d
Q 3.01100897733371 1.1211e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2301  
   data-arc span      35380 days (96.87 yr)  
   first obs. used      1923-03-24  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40997  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:38:37  

Additional Information
 Earth MOID = .851066 au 
 Jupiter MOID = 2.70414 au 
 T_jup = 3.395 
[ 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 10.0   n/a MPO431501  
diameter diameter 26.541 km 0.155 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.6134 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Tedesco, E.F. (1979) PhD Dissertation, New. Mex. State Univ. 280pp.]
[Harris, A.W.; Young, J.W.; Bowell, E.; Tholen, D.J. (1999) Icarus 142, 173-201.]
[Kiss, L.L.; Szabo, G.; Sarneczky, K. (1999) Astron. Astrophys. Suppl. Ser. 140, 21-28.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Polishook, D. (2012) Minor Planet Bull. 39, 242-244.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Klinglesmith III, D.A.; Hanowell, J.; Risley, E.; Janek, T.; et al. (2013) Minor Planet Bull. 40, 154-156.]
[Warner, B.D. (2014) Minor Planet Bull. 41, 144-155.]
[Hanus, J.; Delbo, M.; Durech, J.; Ali-Lagoa, V. (2018) Icarus 309, 297-337.]
[Gonzalez, L.; Bentz, M.C.; Paredes, L. (2019) Minor Planet Bull. 46, 8-9.]
geometric albedo albedo 0.225   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

852 Wladilena (A916 GM)          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 GM = A913 SB = A924 WJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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