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JPL Small-Body Database Browser
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215804 (2004 QG8)
Classification: Main-belt Asteroid          SPK-ID: 2215804
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2236438429730885 4.6775e-08  
a 3.183344091315881 4.0079e-08 au
q 2.471408785228323 1.5222e-07 au
i 15.63955530751273 1.0904e-05 deg
node 38.63087059449916 1.8857e-05 deg
peri 269.4581989230311 3.4845e-05 deg
M 288.458523650033 3.1784e-05 deg
tp 2459412.767596198896
(2021-Jul-17.26759620)
0.00018764 TDB
period 2074.549508953082
5.68
3.9179e-05
1.073e-07
d
yr
n .1735316503396795 3.2772e-09 deg/d
Q 3.895279397403439 4.9043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      429  
   data-arc span      6245 days (17.10 yr)  
   first obs. used      2003-03-23  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5428  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 09:22:04  

Additional Information
 Earth MOID = 1.51905 au 
 Jupiter MOID = 1.73299 au 
 T_jup = 3.103 
[ 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 14.9   n/a MPO433412  
diameter diameter 4.649 km 0.183 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 1.22 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.082   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

215804 (2004 QG8)          Discovered 2004-Aug-16 by Siding Spring Survey at Siding Spring
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

[ show close-approach data ]
Alternate Designations
 2004 QG8 = 2003 FP44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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