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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1368321657755874 1.1763e-08  
a 2.25388064223914 5.0205e-09 au
q 1.945477272561887 2.7591e-08 au
i 3.372126585415927 5.8438e-07 deg
node 243.6752882590223 1.1627e-05 deg
peri 156.5210233220617 1.2791e-05 deg
M 29.98474145772537 8.0597e-06 deg
tp 2459097.557999212486
(2020-Sep-05.05799921)
2.7576e-05 TDB
period 1235.932627124824
3.38
4.1295e-06
1.131e-08
d
yr
n .29127801313691 9.7322e-10 deg/d
Q 2.562284011916394 5.7074e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3143  
   data-arc span      41092 days (112.50 yr)  
   first obs. used      1908-09-21  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42305  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:59:30  

Additional Information
 Earth MOID = .953112 au 
 Jupiter MOID = 2.81964 au 
 T_jup = 3.610 
[ 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 12.50   n/a E2021B10  
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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