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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07590066411962709 5.8884e-08  
a 3.006366888298283 4.1411e-08 au
q 2.778181644889187 1.7941e-07 au
i 11.22673244260914 8.1217e-06 deg
node 40.73942926672258 2.4315e-05 deg
peri 279.2200346809747 6.384e-05 deg
M 93.9608303287239 5.9915e-05 deg
tp 2458503.557956706821
(2019-Jan-20.05795671)
0.00031882 TDB
period 1903.975677520753
5.21
3.9339e-05
1.077e-07
d
yr
n .1890780456128364 3.9067e-09 deg/d
Q 3.23455213170738 4.4554e-08 au
  Orbit Determination Parameters
   # obs. used (total)      291  
   data-arc span      4625 days (12.66 yr)  
   first obs. used      2007-04-18  
   last obs. used      2019-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52215  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 20:53:41  

Additional Information
 Earth MOID = 1.79491 au 
 Jupiter MOID = 2.01926 au 
 T_jup = 3.218 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457700.5 (2016-Nov-08.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07795507936941574 5.8689e-08  
q 2.772998669102321 1.7855e-07 au
tp 2458496.745992792294
(2019-Jan-13.24599279)
0.00031279 TDB
node 40.76931052919065 2.434e-05 deg
peri 278.0168654229504 6.2791e-05 deg
i 11.2227583756387 8.1228e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      291  
   data-arc span      4625 days (12.66 yr)  
   first obs. used      2007-04-18  
   last obs. used      2019-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52215  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 20:53:41  

Additional Information
 Jupiter MOID = 2.01926 au 
 T_jup = 3.218 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.444391728588535E-15 -1.024012785264468E-14 1.255474174601568E-11 -6.022954525327461E-16 2.240177431584757E-12 7.961498633860893E-15
q -1.024012785264468E-14 3.188057400392929E-14 -3.992747727053325E-11 -7.997467908377833E-16 -7.259186327350358E-12 -2.157689749607937E-14
tp 1.255474174601568E-11 -3.992747727053325E-11 9.783687656752669E-8 4.586609416763756E-11 1.809869306061097E-8 1.617968158354562E-11
node -6.022954525327461E-16 -7.997467908377833E-16 4.586609416763756E-11 5.924554697077664E-10 -5.721358841228057E-10 -9.218809653527778E-11
peri 2.240177431584757E-12 -7.259186327350358E-12 1.809869306061097E-8 -5.721358841228057E-10 3.942768585501492E-9 9.297597893699961E-11
i 7.961498633860893E-15 -2.157689749607937E-14 1.617968158354562E-11 -9.218809653527778E-11 9.297597893699961E-11 6.598042902782385E-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 15.7   n/a MPO503349  
rotation period rot_per 6.08 h n/a LCDB (Rev. 2019-August); 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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