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4245 Nairc (1981 UC10)
Classification: Main-belt Asteroid          SPK-ID: 2004245
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1688054993770777 2.1176e-08  
a 2.37494698120474 6.7843e-09 au
q 1.97404287004839 5.0295e-08 au
i 1.943228862172621 1.6346e-07 deg
node 359.0322333562563 1.1264e-05 deg
peri 26.030060928462 1.1818e-05 deg
M 266.5581813549094 4.6289e-06 deg
tp 2459547.490901111242
(2021-Nov-28.99090111)
1.8339e-05 TDB
period 1336.839610051941
3.66
5.7282e-06
1.568e-08
d
yr
n .2692918412149777 1.1539e-09 deg/d
Q 2.775851092361089 7.9295e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2471  
   data-arc span      24243 days (66.37 yr)  
   first obs. used      1954-04-08  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45528  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:06:59  

Additional Information
 Earth MOID = .976805 au 
 Jupiter MOID = 2.67952 au 
 T_jup = 3.522 
[ 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 13.92   n/a E2020-QM5  
diameter diameter 10.218 km 0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.039   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4245 Nairc           Discovered 1981 Oct. 29 at the Purple Mountain Observatory.
Nairc is the name for Nanjing Astronomical Instrument Research Center, Chinese Academy of Sciences, founded in 1958. Nairc has manufactured over 70 different types of professional astronomical instruments.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050523/MPCPages.arcLast Updated: 2005-07-21

Alternate Designations
 1981 UC10 = 1955 QH1 = 1977 RQ8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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