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324798 (2007 HO20)
Classification: Main-belt Asteroid          SPK-ID: 2324798
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07576335632835943 5.985e-08  
a 3.005255448362995 4.3868e-08 au
q 2.777567208970926 1.8353e-07 au
i 11.22845402130387 8.1653e-06 deg
node 40.73783371371285 2.6044e-05 deg
peri 278.9547516230538 6.7024e-05 deg
M 18.56981009996514 6.3496e-05 deg
tp 2458502.342050290640
(2019-Jan-18.84205029)
0.00033592 TDB
period 1902.919938607023
5.21
4.1666e-05
1.141e-07
d
yr
n .189182946006403 4.1423e-09 deg/d
Q 3.232943687755065 4.7192e-08 au
  Orbit Determination Parameters
   # obs. used (total)      236  
   data-arc span      4576 days (12.53 yr)  
   first obs. used      2007-04-18  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57982  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 09:13:10  

Additional Information
 Earth MOID = 1.79348 au 
 Jupiter MOID = 2.01931 au 
 T_jup = 3.218 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457533.5 (2016-May-25.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07861269613840635 6.0023e-08  
q 2.769358588683445 1.8405e-07 au
tp 2456592.822619793296
(2013-Oct-27.32261979)
0.00033266 TDB
node 40.79089299460174 2.609e-05 deg
peri 278.0359454192828 6.5191e-05 deg
i 11.22112054978921 8.1633e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      236  
   data-arc span      4576 days (12.53 yr)  
   first obs. used      2007-04-18  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57982  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 09:13:10  

Additional Information
 Jupiter MOID = 2.01931 au 
 T_jup = 3.218 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.602767178458169E-15 -1.077992294697517E-14 1.321419009983621E-11 -5.47417610766544E-15 2.375431160483256E-12 8.086459705863966E-15
q -1.077992294697517E-14 3.387488615388529E-14 -4.30141835143393E-11 1.666376932666483E-14 -7.59082743789292E-12 -2.119326698554848E-14
tp 1.321419009983621E-11 -4.30141835143393E-11 1.106628482685287E-7 1.955834385721734E-11 1.986622237509325E-8 1.611196470843717E-11
node -5.47417610766544E-15 1.666376932666483E-14 1.955834385721734E-11 6.807067275385412E-10 -6.637456352287952E-10 -9.370658514486037E-11
peri 2.375431160483256E-12 -7.59082743789292E-12 1.986622237509325E-8 -6.637456352287952E-10 4.249924325100008E-9 9.494706769129112E-11
i 8.086459705863966E-15 -2.119326698554848E-14 1.611196470843717E-11 -9.370658514486037E-11 9.494706769129112E-11 6.663881216219566E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO310984  
rotation period rot_per 6.08 h n/a LCDB (Rev. 2019-January); 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

324798 (2007 HO20)          Discovered 2007-Apr-18 by Spacewatch at Kitt Peak
Reference: 20120406/Numbers.arcLast Updated: 2012-04-09

Alternate Designations
 2007 HO20 = 2009 WV170 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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