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15849 Billharper (1995 YM10)
Classification: Main-belt Asteroid          SPK-ID: 2015849
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07098760168788812 3.7792e-08  
a 2.951844778625257 1.705e-08 au
q 2.742300397235735 1.067e-07 au
i 2.379409407486092 5.3902e-06 deg
node 162.820392555306 0.00010964 deg
peri 102.6720161361324 0.00011767 deg
M 148.9228682318643 4.3919e-05 deg
tp 2458234.202174728451
(2018-Apr-25.70217473)
0.00022525 TDB
period 1852.416760253694
5.07
1.6049e-05
4.394e-08
d
yr
n .1943407162601449 1.6838e-09 deg/d
Q 3.161389160014779 1.826e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1150  
   data-arc span      15129 days (41.42 yr)  
   first obs. used      1978-09-02  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53985  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:29:17  

Additional Information
 Earth MOID = 1.72773 au 
 Jupiter MOID = 1.88534 au 
 T_jup = 3.264 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456792.5 (2014-May-15.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07313849376970626 3.7034e-08  
q 2.735283607238302 1.0454e-07 au
tp 2456388.477500176073
(2013-Apr-05.97750018)
0.0002202 TDB
node 162.8541562225238 0.00010959 deg
peri 103.8514912999829 0.00011736 deg
i 2.379453026056446 5.394e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1150  
   data-arc span      15129 days (41.42 yr)  
   first obs. used      1978-09-02  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53985  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:29:17  

Additional Information
 Jupiter MOID = 1.88534 au 
 T_jup = 3.264 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.371519006017503E-15 -3.833407800684125E-15 -2.209909400260929E-12 -6.247950967330154E-15 -4.453155282938647E-13 3.750139393870342E-16
q -3.833407800684125E-15 1.092944427666193E-14 6.532412848603939E-12 1.991804819818308E-14 1.317610965681752E-12 -8.790465161108659E-16
tp -2.209909400260929E-12 6.532412848603939E-12 4.848768487496672E-8 3.236757708167398E-11 9.275901511078182E-9 -4.642709325206116E-12
node -6.247950967330154E-15 1.991804819818308E-14 3.236757708167398E-11 1.200991770068819E-8 -1.199264370043369E-8 2.973519190329228E-10
peri -4.453155282938647E-13 1.317610965681752E-12 9.275901511078182E-9 -1.199264370043369E-8 1.377253708242556E-8 -2.979746072231517E-10
i 3.750139393870342E-16 -8.790465161108659E-16 -4.642709325206116E-12 2.973519190329228E-10 -2.979746072231517E-10 2.909475811915489E-11

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 14.3   n/a MPO309277  

15849 Billharper           Discovered 1995 Dec. 18 by Spacewatch at Kitt Peak.
William Leonard Harper (b. 1943) specializes in the philosophy of science. He earned a Ph.D. at the University of Rochester and has been in the department of philosophy at the University of Western Ontario since 1970. The name was suggested by R. Jedicke and P. Jedicke.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050523/MPCPages.arcLast Updated: 2005-07-21

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Alternate Designations
 1995 YM10 = 1978 RR9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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