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(2015 WH9)
Classification: Amor [NEO]          SPK-ID: 3735538
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 90 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5892136255123396 2.6542e-06  
a 3.164595143768186 2.2683e-05 au
q 1.29997256582979 9.7135e-07 au
i 11.29365138177443 2.9376e-05 deg
node 68.22994718665909 4.0429e-05 deg
peri 67.15856747677935 9.2996e-05 deg
M 310.1790344111238 0.0033497 deg
tp 2459485.067502602233
(2021-Sep-27.56750260)
0.022192 TDB
period 2056.248804613233
5.63
0.022108
6.053e-05
d
yr
n .1750760896212235 1.8824e-06 deg/d
Q 5.029217721706583 3.6048e-05 au
  Orbit Determination Parameters
   # obs. used (total)      633  
   data-arc span      196 days  
   first obs. used      2015-11-22  
   last obs. used      2016-06-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      3  
   norm. resid. RMS      .35492  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 15:21:28  

Additional Information
 Earth MOID = .372668 au 
 Jupiter MOID = .796416 au 
 T_jup = 2.880 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.6   n/a E2016G05  
rotation period rot_per 11.329 h n/a LCDB (Rev. 2020-October); 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:
[Warner, B.D. (2016) Minor Planet Bull. 43, 240-250.]

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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