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JPL Small-Body Database Browser
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27740 Obatomoyuki (1990 UC1)
Classification: Main-belt Asteroid          SPK-ID: 2027740
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2157761444359902 3.7087e-08  
a 2.395294472178714 8.3515e-09 au
q 1.878447066183151 9.1053e-08 au
i 10.31065877487493 5.4244e-06 deg
node 8.657025312738712 2.0266e-05 deg
peri 302.4392378041531 2.3729e-05 deg
M 44.70528769309586 1.3078e-05 deg
tp 2458832.351426034629
(2019-Dec-14.85142603)
4.8901e-05 TDB
period 1354.056527789267
3.71
7.0817e-06
1.939e-08
d
yr
n .265867777756489 1.3905e-09 deg/d
Q 2.912141878174277 1.0154e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2092  
   data-arc span      10520 days (28.80 yr)  
   first obs. used      1990-10-11  
   last obs. used      2019-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42543  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 02:55:36  

Additional Information
 Earth MOID = .888362 au 
 Jupiter MOID = 2.45282 au 
 T_jup = 3.476 
[ 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 14.4   n/a MPO337492  
diameter diameter 4.736 km 0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

27740 Obatomoyuki           Discovered 1990 Oct. 20 by T. Seki at Geisei.
Tomoyuki Oba (b. 1965) is from Konan city, Kochi prefecture. He helps visitors as a presenter at Geisei Observatory, while teaching junior high school.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070402/MPCPages.arcLast Updated: 2007-07-05

Alternate Designations
 1990 UC1 = 1998 XL44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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