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10991 Dulov (1974 RY1)
Classification: Main-belt Asteroid          SPK-ID: 2010991
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2284977638192703 5.2211e-08  
a 2.353086475252363 1.3573e-08 AU
q 1.815411477583829 1.2489e-07 AU
i 2.735726982702118 6.1528e-06 deg
node 183.5681384306744 0.00010579 deg
peri 134.7138330423917 0.00010657 deg
M 71.61037024819511 1.4914e-05 deg
tp 2456738.242041152501
(2014-Mar-21.74204115)
5.3491e-05 JED
period 1318.424480391224
3.61
1.1407e-05
3.123e-08
d
yr
n .2730531823052733 2.3625e-09 deg/d
Q 2.890761472920897 1.6674e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      973  
   data-arc span      23657 days (64.77 yr)  
   first obs. used      1949-11-21  
   last obs. used      2014-08-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49496  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:57:43  

Additional Information
 Earth MOID = .804424 AU 
 T_jup = 3.519 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2 mag n/a MPO263448  

10991 Dulov           Discovered 1974 Sept. 14 by N. S. Chernykh at the Crimean Astrophysical Observatory.
Professor Viktor Georgievich Dulov (1929-2001) was known for his work in theoretical gas dynamics and applied mathematics. He worked at Krasnoyarsk Computation Center, at Novosibirsk Institute of Theoretical and Applied Mechanics and at St. Petersburg University.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030501/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1974 RY1 = 1949 WH1 = 1985 SL6 = 1992 QL 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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