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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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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1836431345125253 3.018e-08  
a 3.102528643913858 1.6767e-08 au
q 2.532770558830622 9.1144e-08 au
i 21.00991628968518 4.1925e-06 deg
node 168.7974384659229 9.8235e-06 deg
peri 114.5687064959708 1.6063e-05 deg
M 119.8957332616778 1.1419e-05 deg
tp 2458731.727027883168
(2019-Sep-05.22702788)
6.2832e-05 TDB
period 1996.053266046897
5.46
1.6181e-05
4.43e-08
d
yr
n .18035590839365 1.4621e-09 deg/d
Q 3.672286728997093 1.9847e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1515  
   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      .4781  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:30:41  

Additional Information
 Earth MOID = 1.59466 au 
 Jupiter MOID = 1.98903 au 
 T_jup = 3.094 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457452.5 (2016-Mar-05.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1839232259360034 2.9969e-08  
q 2.531888926363359 9.0483e-08 au
tp 2456738.566816060361
(2014-Mar-22.06681606)
6.483e-05 TDB
node 168.8767211809745 9.8196e-06 deg
peri 114.9828237029338 1.61e-05 deg
i 21.01381913330843 4.1942e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1515  
   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      .4781  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:30:41  

Additional Information
 Jupiter MOID = 1.98903 au 
 T_jup = 3.094 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.981596154697042E-16 -2.6818880311916E-15 -3.062790494717925E-13 -4.165136204293972E-15 -6.711000964740764E-14 -4.859191357549298E-15
q -2.6818880311916E-15 8.187183394539156E-15 7.339410431682141E-13 1.341135868997302E-14 1.802823556513749E-13 1.550113187678794E-14
tp -3.062790494717925E-13 7.339410431682141E-13 4.202954726777371E-9 5.947022389844568E-12 8.375739201220734E-10 2.328192181678954E-12
node -4.165136204293972E-15 1.341135868997302E-14 5.947022389844568E-12 9.642542588282121E-11 -8.844558360182312E-11 8.394197325656248E-12
peri -6.711000964740764E-14 1.802823556513749E-13 8.375739201220734E-10 -8.844558360182312E-11 2.592058466830677E-10 -7.262066022850607E-12
i -4.859191357549298E-15 1.550113187678794E-14 2.328192181678954E-12 8.394197325656248E-12 -7.262066022850607E-12 1.759137403984533E-11

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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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