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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2157431758130928 3.1319e-08  
a 2.395682867442259 7.3944e-09 au
q 1.878830637379249 7.575e-08 au
i 10.31003040793196 4.6904e-06 deg
node 8.654190298719779 1.9787e-05 deg
peri 302.4872467877965 2.2976e-05 deg
M 97.83228254642582 1.3076e-05 deg
tp 2458832.437049734404
(2019-Dec-14.93704973)
4.8471e-05 TDB
period 1354.385880067105
3.71
6.2706e-06
1.717e-08
d
yr
n .2658031254594616 1.2306e-09 deg/d
Q 2.912535097505268 8.9897e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2332  
   data-arc span      11081 days (30.34 yr)  
   first obs. used      1990-10-11  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41606  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 05:43:39  

Additional Information
 Earth MOID = .886821 au 
 Jupiter MOID = 2.45238 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 14.58   n/a MPCxxxxx  
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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