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11856 Nicolabonev (1988 RM8)
Classification: Main-belt Asteroid          SPK-ID: 2011856
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2339568359258376 4.9488e-08  
a 2.382693252182867 1.0539e-08 au
q 1.825245877920319 1.1386e-07 au
i 4.959918479490625 4.1113e-06 deg
node 8.394054527595959 4.6157e-05 deg
peri 12.94976751352244 4.7005e-05 deg
M 205.9555671608908 1.0142e-05 deg
tp 2459575.336234687861
(2021-Dec-26.83623469)
4.0264e-05 TDB
period 1343.385415971303
3.68
8.9133e-06
2.44e-08
d
yr
n .2679796845492107 1.778e-09 deg/d
Q 2.940140626445414 1.3005e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1079  
   data-arc span      11464 days (31.39 yr)  
   first obs. used      1988-09-10  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54118  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:10:39  

Additional Information
 Earth MOID = .828377 au 
 Jupiter MOID = 2.52484 au 
 T_jup = 3.495 
[ 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 15.3   n/a MPO332931  
diameter diameter 4.630 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.083   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11856 Nicolabonev           Discovered 1988 Sept. 11 by V. Ivanova and V. Shkodrov at Rozhen.
Nicola Bonev (1898-1979) was for 40 years the head of the astronomy department at Sofia University and founder and director of the Institute of Astronomy of the Bulgarian Academy of Sciences. He was known for his research in celestial mechanics, theoretical astronomy, solar activity, lunar studies and cosmology.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100330/MPCPages.arcLast Updated: 2010-04-05

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Alternate Designations
 1988 RM8 = 1999 RV171 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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