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JPL Small-Body Database Browser
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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 | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09854764077602771 3.7744e-08  
a 2.581755348685326 9.3269e-09 au
q 2.327329450011496 9.5134e-08 au
i 8.274686479130441 4.2595e-06 deg
node 352.4154703894332 2.6495e-05 deg
peri 41.47183535742212 3.338e-05 deg
M 230.9209405863699 2.1203e-05 deg
tp 2459143.780786690473
(2020-Oct-21.28078669)
9.0148e-05 TDB
period 1515.20381460045
4.15
8.2108e-06
2.248e-08
d
yr
n .2375917988926987 1.2875e-09 deg/d
Q 2.836181247359156 1.0246e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2239  
   data-arc span      38524 days (105.47 yr)  
   first obs. used      1914-02-28  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43623  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:12:37  

Additional Information
 Earth MOID = 1.33859 au 
 Jupiter MOID = 2.56529 au 
 T_jup = 3.403 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.0   n/a MPO263351  
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. 2019-January); 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

[ show close-approach data ]
Alternate Designations
 A916 QF = 1958 XU = A914 DA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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