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278309 (2007 HP15)
Classification: Main-belt Asteroid          SPK-ID: 2278309
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3305412232364587 5.4121e-08  
a 2.690546749601335 1.872e-08 au
q 1.801210135813232 1.4487e-07 au
i 16.34158896614081 6.3718e-06 deg
node 70.30307576351785 2.46e-05 deg
peri 194.3585895871882 2.6214e-05 deg
M 327.4537225801901 9.836e-06 deg
tp 2459146.233052576698
(2020-Oct-23.73305258)
4.4843e-05 TDB
period 1611.978483772092
4.41
1.6823e-05
4.606e-08
d
yr
n .2233280429138149 2.3308e-09 deg/d
Q 3.579883363389437 2.4908e-08 au
  Orbit Determination Parameters
   # obs. used (total)      219  
   data-arc span      8931 days (24.45 yr)  
   first obs. used      1995-11-16  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65979  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 16:31:40  

Additional Information
 Earth MOID = .789947 au 
 Jupiter MOID = 1.52973 au 
 T_jup = 3.236 
[ 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 MPO470943  

278309 (2007 HP15)          Discovered 2007-Apr-19 by Lowe, A. at Mayhill
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

[ show close-approach data ]
Alternate Designations
 2007 HP15 = 1995 WG11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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