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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09826380670619012 3.6727e-08  
a 2.579475000761482 8.2566e-09 au
q 2.326005967883207 9.3121e-08 au
i 8.278533809635341 4.1933e-06 deg
node 352.344412924471 2.5243e-05 deg
peri 42.09690287730141 3.1795e-05 deg
M 325.429519806962 1.937e-05 deg
tp 2459145.810943613551
(2020-Oct-23.31094361)
8.1515e-05 TDB
period 1513.196791273187
4.14
7.2653e-06
1.989e-08
d
yr
n .237906927952907 1.1423e-09 deg/d
Q 2.832944033639758 9.0679e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2471  
   data-arc span      38922 days (106.56 yr)  
   first obs. used      1914-02-28  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42068  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:29:50  

Additional Information
 Earth MOID = 1.3383 au 
 Jupiter MOID = 2.56348 au 
 T_jup = 3.404 
[ 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-August); 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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