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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2743917192456524 9.9063e-09  
a 2.362431396565182 6.9361e-09 au
q 1.714199784061754 2.2927e-08 au
i 23.01588399775633 3.9607e-07 deg
node 27.27139753763714 1.2593e-06 deg
peri 282.35982834085 4.3235e-06 deg
M 274.9900436176127 5.2413e-06 deg
tp 2459709.687577865141
2.027e-05 TDB
period 1326.28615316888
n .2714346365901929 1.1954e-09 deg/d
Q 3.01066300906861 8.8393e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3173  
   data-arc span      35926 days (98.36 yr)  
   first obs. used      1923-03-24  
   last obs. used      2021-08-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37022  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:04:29  

Additional Information
 Earth MOID = .849705 au 
 Jupiter MOID = 2.70325 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 10.11   n/a MPCxxxxx  
diameter diameter 26.541 km 0.155 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 4.6134 h n/a LCDB (Rev. 2020-October); 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,]
[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.]
[Behrend, R. (2020) Observatoire de Geneve web site,]
geometric albedo albedo 0.225   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

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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