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JPL Small-Body Database Browser
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266444 (2007 HP81)
Classification: Main-belt Asteroid          SPK-ID: 2266444
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07674618290782195 6.6735e-08  
a 3.018806473988921 4.0372e-08 au
q 2.78712460017285 1.9885e-07 au
i 1.754642470777841 1.2133e-05 deg
node 34.57242891877524 0.00025453 deg
peri 264.8855039655418 0.00027914 deg
M 25.99071864095117 0.00012179 deg
tp 2458462.185687306430
(2018-Dec-09.68568731)
0.00064723 TDB
period 1915.805147889635
5.25
3.8432e-05
1.052e-07
d
yr
n .1879105505048673 3.7695e-09 deg/d
Q 3.250488347804991 4.347e-08 au
  Orbit Determination Parameters
   # obs. used (total)      151  
   data-arc span      8591 days (23.52 yr)  
   first obs. used      1993-09-19  
   last obs. used      2017-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62135  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-10 17:16:35  

Additional Information
 Earth MOID = 1.77143 au 
 Jupiter MOID = 1.90467 au 
 T_jup = 3.242 
[ 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 16.3   n/a MPO314800  

266444 (2007 HP81)          Discovered 2007-Apr-25 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2007 HP81 = 1996 EB4 = 2006 BX134 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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