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2112 Ulyanov (1972 NP)
Classification: Main-belt Asteroid          SPK-ID: 2002112
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1367105466506183 3.3071e-08  
a 2.253564924794913 5.8405e-09 au
q 1.945478832013541 7.4888e-08 au
i 3.372294677632468 3.638e-06 deg
node 243.6740721724397 6.2359e-05 deg
peri 156.4979247712693 6.3836e-05 deg
M 331.74134598282 1.4266e-05 deg
tp 2459097.495706363975
(2020-Sep-04.99570636)
4.9085e-05 TDB
period 1235.672947119207
3.38
4.8036e-06
1.315e-08
d
yr
n .2913392259976946 1.1326e-09 deg/d
Q 2.561651017576285 6.6389e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2859  
   data-arc span      40959 days (112.14 yr)  
   first obs. used      1908-09-21  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43408  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:04:25  

Additional Information
 Earth MOID = .954127 au 
 Jupiter MOID = 2.81964 au 
 T_jup = 3.611 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.4   n/a MPO492775  
diameter diameter 7.480 km 0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.041 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Maleszewski, C.; Clark, M. (2004) Minor Planet Bull. 31, 93-94.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Benishek, V. (2014) Minor Planet Bull. 41, 126-127.]
[Stephens, R.D. (2014) Minor Planet Bull. 41, 13-15.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.380   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2112 Ulyanov           Discovered 1972 July 13 by T. M. Smirnova at the Crimean Astrophysical Observatory.
Named in memory of Aleksandr Ulyanov (1866-1887), eldest brother of V. I. Lenin.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5283Last Updated: 2007-10-23

Alternate Designations
 1972 NP = 1949 YC = 1952 UU1 = 1962 RA = 1968 KB = 1969 UB2 = 1976 YD1 = A908 SC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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