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JPL Small-Body Database Browser
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447747 (2007 HT20)
Classification: Main-belt Asteroid          SPK-ID: 2447747
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .106372087164805 7.3151e-08  
a 2.38446696266315 2.1533e-08 au
q 2.130826235069148 1.7162e-07 au
i 7.381942021857293 1.2666e-05 deg
node 34.2120027976081 5.9015e-05 deg
peri 278.1684707713061 8.4277e-05 deg
M 117.8768788249943 5.7165e-05 deg
tp 2458560.136293571476
(2019-Mar-17.63629357)
0.00021321 TDB
period 1344.88574769299
3.68
1.8217e-05
4.988e-08
d
yr
n .2676807309598917 3.6259e-09 deg/d
Q 2.638107690257153 2.3823e-08 au
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      4577 days (12.53 yr)  
   first obs. used      2007-04-18  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63133  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 16:22:54  

Additional Information
 Earth MOID = 1.13236 au 
 Jupiter MOID = 2.59633 au 
 T_jup = 3.517 
[ 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 18.0   n/a MPO450460  

447747 (2007 HT20)          Discovered 2007-Apr-18 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-10-28

Alternate Designations
 2007 HT20 = 2008 TU59 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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