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66055 (1998 QQ90)
Classification: Main-belt Asteroid          SPK-ID: 2066055
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1837951605120541 3.0187e-08  
a 3.102144932249452 1.6808e-08 au
q 2.531985706495009 9.1179e-08 au
i 21.01060423855819 4.193e-06 deg
node 168.8002842319426 9.8245e-06 deg
peri 114.5351426352518 1.6052e-05 deg
M 84.56158831132078 1.1371e-05 deg
tp 2458731.727437710924
(2019-Sep-05.22743771)
6.2752e-05 TDB
period 1995.682978455535
5.46
1.622e-05
4.441e-08
d
yr
n .1803893724035293 1.4661e-09 deg/d
Q 3.672304158003896 1.9898e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1514  
   data-arc span      8174 days (22.38 yr)  
   first obs. used      1998-08-28  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47586  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:19:02  

Additional Information
 Earth MOID = 1.59262 au 
 Jupiter MOID = 1.99015 au 
 T_jup = 3.094 
[ 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 13.65   n/a E2021B10  
diameter diameter 9.240 km 2.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 4.30 h n/a LCDB (Rev. 2020-October); 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:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.082   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

66055 (1998 QQ90)          Discovered 1998-Aug-28 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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