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18951 (2000 QQ98)
Classification: Main-belt Asteroid          SPK-ID: 2018951
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2168307285483772 3.1726e-08  
a 2.465465239428839 7.4884e-09 au
q 1.930876615352785 7.6475e-08 au
i 3.16791881113914 3.9222e-06 deg
node 104.9807617428557 5.4256e-05 deg
peri 320.2297485441953 5.4976e-05 deg
M 85.33978192501945 9.4292e-06 deg
tp 2459061.306351624882
(2020-Jul-30.80635162)
3.6373e-05 TDB
period 1413.991349556813
3.87
6.4421e-06
1.764e-08
d
yr
n .2545984458199372 1.1599e-09 deg/d
Q 3.000053863504894 9.1121e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1381  
   data-arc span      18340 days (50.21 yr)  
   first obs. used      1971-03-24  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48383  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:44:23  

Additional Information
 Earth MOID = .945513 au 
 Jupiter MOID = 2.32039 au 
 T_jup = 3.452 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.20   n/a MPCxxxxx  
diameter diameter 3.256 km 0.722 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.154   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

18951 (2000 QQ98)          Discovered 2000-Aug-28 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 QQ98 = 1998 EO10 = 2268 T-1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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