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JPL Small-Body Database Browser
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34217 (2000 QA78)
Classification: Main-belt Asteroid          SPK-ID: 2034217
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .180299713028404 4.1228e-08  
a 2.475501156373911 1.1417e-08 au
q 2.029169008278213 1.0332e-07 au
i 6.110071168999172 4.6061e-06 deg
node 344.0448101858423 4.1626e-05 deg
peri 357.5822387825823 4.3622e-05 deg
M 26.08251326864452 1.6558e-05 deg
tp 2458897.428151831150
(2020-Feb-17.92815183)
6.5031e-05 TDB
period 1422.633814410562
3.89
9.8416e-06
2.694e-08
d
yr
n .2530517666270701 1.7506e-09 deg/d
Q 2.92183330446961 1.3475e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1485  
   data-arc span      12308 days (33.70 yr)  
   first obs. used      1985-12-14  
   last obs. used      2019-08-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53425  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 04:49:06  

Additional Information
 Earth MOID = 1.02099 au 
 Jupiter MOID = 2.47551 au 
 T_jup = 3.451 
[ 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 14.2   n/a MPO385030  
diameter diameter 3.271 km 0.839 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.314 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.415   0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

34217 (2000 QA78)          Discovered 2000-Aug-24 by LINEAR at Socorro
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 QA78 = 1985 XY = 1999 GZ48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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