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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09826381111014468 3.7238e-08  
a 2.579475003035157 9.1798e-09 au
q 2.326005958573571 9.3934e-08 au
i 8.27853310480103 4.2301e-06 deg
node 352.3444220869945 2.6433e-05 deg
peri 42.09689741503078 3.3389e-05 deg
M 325.4295147748488 2.1462e-05 deg
tp 2459145.810964957281
(2020-Oct-23.31096496)
9.0448e-05 TDB
period 1513.196793273895
4.14
8.0777e-06
2.212e-08
d
yr
n .2379069276383528 1.27e-09 deg/d
Q 2.832944047496744 1.0082e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2278  
   data-arc span      38606 days (105.70 yr)  
   first obs. used      1914-02-28  
   last obs. used      2019-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43512  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:38:13  

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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