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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2156613266251771 3.1329e-08  
a 2.39606490599159 7.4098e-09 au
q 1.879326369685413 7.5792e-08 au
i 10.30989153197469 4.6902e-06 deg
node 8.647598473396441 1.9786e-05 deg
peri 302.5357261184026 2.2977e-05 deg
M 149.8744005443737 1.3186e-05 deg
tp 2458832.510196167380
(2019-Dec-15.01019617)
4.8491e-05 TDB
period 1354.709868011314
3.71
6.2841e-06
1.72e-08
d
yr
n .2657395568605938 1.2327e-09 deg/d
Q 2.912803442297767 9.0077e-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 = .888562 au 
 Jupiter MOID = 2.45159 au 
 T_jup = 3.475 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456835.5 (2014-Jun-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2150160832389384 3.1217e-08  
q 1.881674462621012 7.5472e-08 au
tp 2457478.958987670769
(2016-Mar-31.45898767)
4.6622e-05 TDB
node 8.720410590084869 1.9792e-05 deg
peri 302.4755850663411 2.3013e-05 deg
i 10.30638789065175 4.6888e-06 deg
  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
 Jupiter MOID = 2.45159 au 
 T_jup = 3.475 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.744915883995439E-16 -2.348990224051046E-15 3.174447053288644E-13 2.638675060977619E-15 7.209240904394076E-14 1.202123724219239E-15
q -2.348990224051046E-15 5.695960617761321E-15 -6.871633612881032E-13 -7.051581117294678E-15 -1.59212715740854E-13 -2.903373165690234E-15
tp 3.174447053288644E-13 -6.871633612881032E-13 2.173604450452787E-9 -1.054485660184264E-11 5.572690902184744E-10 -1.70775659307773E-12
node 2.638675060977619E-15 -7.051581117294678E-15 -1.054485660184264E-11 3.917386639251582E-10 -3.872305983788119E-10 1.601295552310713E-11
peri 7.209240904394076E-14 -1.59212715740854E-13 5.572690902184744E-10 -3.872305983788119E-10 5.295937524121179E-10 -1.618476108562987E-11
i 1.202123724219239E-15 -2.903373165690234E-15 -1.70775659307773E-12 1.601295552310713E-11 -1.618476108562987E-11 2.198492832078651E-11

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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