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233656 (2008 QA20)
Classification: Main-belt Asteroid          SPK-ID: 2233656
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1671688308961243 6.0784e-08  
a 2.57228956196143 2.146e-08 au
q 2.142282923162034 1.546e-07 au
i 14.9624493240617 5.6509e-06 deg
node 98.32877359923106 2.3082e-05 deg
peri 301.0511868358687 3.0851e-05 deg
M 261.3806522900578 2.6109e-05 deg
tp 2459413.298238047615
(2021-Jul-17.79823805)
0.00011204 TDB
period 1506.878408222932
4.13
1.8857e-05
5.163e-08
d
yr
n .2389044783145772 2.9896e-09 deg/d
Q 3.002296200760826 2.5047e-08 au
  Orbit Determination Parameters
   # obs. used (total)      246  
   data-arc span      9701 days (26.56 yr)  
   first obs. used      1992-12-06  
   last obs. used      2019-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6098  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 07:22:34  

Additional Information
 Earth MOID = 1.1923 au 
 Jupiter MOID = 2.44267 au 
 T_jup = 3.362 
[ 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 16.1   n/a MPO475906  

233656 (2008 QA20)          Discovered 2008-Aug-30 by Hoenig, S. F., Teamo, N. at Hibiscus
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2049-Apr-18 09:57 00:01 Eunom 0.0111931458119017 0.0111907427595167 0.011195559340724 8.06472476458413 8.06472460907634 2469549.914255051 1.04731996105164 696.471112602033 74.0853505938134 -82.1589684670948 22385.6152433336 T 13 CATAB v2.0f-lin.ifort 2020-Feb-25 07:22:38 2020-Feb-25 07:22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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