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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2743293750456718 1.0105e-08  
a 2.362778894850345 7.0387e-09 au
q 1.714599237254947 2.3253e-08 au
i 23.01327416146439 3.9671e-07 deg
node 27.27617285143574 1.2614e-06 deg
peri 282.324431405185 4.3484e-06 deg
M 221.8312947878624 5.0888e-06 deg
tp 2459709.643540578965
(2022-May-10.14354058)
2.03e-05 TDB
period 1326.578796023384
3.63
5.9278e-06
1.623e-08
d
yr
n .2713747581969148 1.2126e-09 deg/d
Q 3.010958552445743 8.9696e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2835  
   data-arc span      35795 days (98.00 yr)  
   first obs. used      1923-03-24  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38237  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:56:23  

Additional Information
 Earth MOID = .849314 au 
 Jupiter MOID = 2.70369 au 
 T_jup = 3.395 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456776.5 (2014-Apr-29.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2749782048670663 1.0055e-08  
q 1.712429595323395 2.3118e-08 au
tp 2457057.086564467937
(2015-Feb-03.58656447)
1.4471e-05 TDB
node 27.31013225344687 1.2614e-06 deg
peri 282.3899357928782 4.3435e-06 deg
i 23.01876295598343 3.9646e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2835  
   data-arc span      35795 days (98.00 yr)  
   first obs. used      1923-03-24  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38237  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:56:23  

Additional Information
 Jupiter MOID = 2.70369 au 
 T_jup = 3.395 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.010975899670978E-16 -2.270925656412081E-16 -3.334601314326288E-14 2.823166781613881E-15 -1.822081142685227E-14 6.791713691279903E-16
q -2.270925656412081E-16 5.344496535691519E-16 9.166193959067846E-14 -6.986317492158211E-15 4.66732848516804E-14 -1.664308888718297E-15
tp -3.334601314326288E-14 9.166193959067846E-14 2.094005116073994E-10 -5.337218161993695E-12 5.974305012661693E-11 -1.701379641087992E-12
node 2.823166781613881E-15 -6.986317492158211E-15 -5.337218161993695E-12 1.591154433846372E-12 -2.580697010850704E-12 3.678458582912014E-13
peri -1.822081142685227E-14 4.66732848516804E-14 5.974305012661693E-11 -2.580697010850704E-12 1.88661700875958E-11 -7.745089499026772E-13
i 6.791713691279903E-16 -1.664308888718297E-15 -1.701379641087992E-12 3.678458582912014E-13 -7.745089499026772E-13 1.571794037660763E-13

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] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
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, 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.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
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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