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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 ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07076837311905465 3.693e-08  
a 2.952518852675881 1.6757e-08 au
q 2.743573896868671 1.047e-07 au
i 2.379406931760448 5.1561e-06 deg
node 162.8120261593281 0.00010726 deg
peri 102.776578172221 0.00011498 deg
M 187.6790908137211 4.2964e-05 deg
tp 2460087.498575850464
(2023-May-22.99857585)
0.00022267 TDB
period 1853.051314631719
5.07
1.5775e-05
4.319e-08
d
yr
n .1942741666986958 1.6539e-09 deg/d
Q 3.161463808483091 1.7943e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1211  
   data-arc span      15480 days (42.38 yr)  
   first obs. used      1978-09-02  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52958  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:11:01  

Additional Information
 Earth MOID = 1.72724 au 
 Jupiter MOID = 1.88424 au 
 T_jup = 3.264 
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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 14.33   n/a E2021B10  

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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