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10331 Peterbluhm (1991 GM10)
Classification: Outer Main-belt Asteroid          SPK-ID: 2010331
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2253795394934237 3.8407e-08  
a 3.992984208227522 3.3101e-08 au
q 3.09304726617269 1.5294e-07 au
i 4.639370840664967 3.9309e-06 deg
node 105.5327868248899 6.3421e-05 deg
peri 232.7053605052903 6.4127e-05 deg
M 61.76088128703574 9.273e-06 deg
tp 2458100.516353662221
7.4664e-05 TDB
period 2914.370859526304
n .1235258027725798 1.536e-09 deg/d
Q 4.892921150282354 4.0562e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1964  
   data-arc span      15471 days (42.36 yr)  
   first obs. used      1977-07-20  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48344  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:20:55  

Additional Information
 Earth MOID = 2.08611 au 
 Jupiter MOID = .543836 au 
 T_jup = 3.004 
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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 11.9   n/a MPO384847  
diameter diameter 19.568 km 0.271 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (  
rotation period rot_per 379. h n/a LCDB (Rev. 2019-January); 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.; Stephens, R.D. (2019) Minor Planet Bull. 46-2, submitted (Hilda Gaggle). Temp:]
geometric albedo albedo 0.127   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (  

10331 Peterbluhm           Discovered 1991 Apr. 9 by F. Borngen at Tautenburg.
Computer specialist Peter Bluhm (1942-1997) was known for his efforts in electronic communication among amateur astronomers in Germany since the early 1980s. In 1987 he founded the first Astronomical Bulletin Board System in Dahlenburg. The name was suggested by A. Doppler.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990928/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1991 GM10 = 1978 VX12 = 1997 AL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2019-Dec-11 22:55 UT
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