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829 Academia (A916 QF)
Classification: Main-belt Asteroid          SPK-ID: 2000829
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09834203989204711 3.6456e-08  
a 2.579633976288926 7.2353e-09 au
q 2.32594750888584 9.271e-08 au
i 8.278467519434152 3.8915e-06 deg
node 352.3437571904936 2.4137e-05 deg
peri 42.15456156136965 3.0206e-05 deg
M 12.96377347854001 1.7035e-05 deg
tp 2459146.004016787900
(2020-Oct-23.50401679)
7.1634e-05 TDB
period 1513.336683090949
4.14
6.3668e-06
1.743e-08
d
yr
n .2378849359976591 1.0008e-09 deg/d
Q 2.833320443692011 7.9468e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2911  
   data-arc span      39105 days (107.06 yr)  
   first obs. used      1914-02-28  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39171  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:55:30  

Additional Information
 Earth MOID = 1.33707 au 
 Jupiter MOID = 2.56271 au 
 T_jup = 3.404 
[ 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 11.03   n/a MPCxxxxx  
diameter diameter 42.685 km 0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.891 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2005) Minor Planet Bull. 32, 54-58.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.054   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

829 Academia (A916 QF)          Discovered 1916-Aug-25 by Neujmin, G. at Simeis
Independent discovery Aug. 31 by M. Wolf, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A916 QF = 1958 XU = A914 DA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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