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JPL Small-Body Database Browser
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4377 Koremori (1987 GD)
Classification: Main-belt Asteroid          SPK-ID: 2004377
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07364018666391857 3.1813e-08  
a 2.376022072370201 6.6561e-09 au
q 2.201051363443268 7.6683e-08 au
i 2.603751878983798 3.3256e-06 deg
node 227.7718404234606 6.722e-05 deg
peri 335.0184888941066 7.0196e-05 deg
M 11.3262533869093 1.9899e-05 deg
tp 2458958.412037142185
(2020-Apr-18.91203714)
7.396e-05 TDB
period 1337.747453745439
3.66
5.6213e-06
1.539e-08
d
yr
n .2691090900543808 1.1308e-09 deg/d
Q 2.550992781297133 7.1463e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2743  
   data-arc span      12085 days (33.09 yr)  
   first obs. used      1987-03-27  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44233  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:06:59  

Additional Information
 Earth MOID = 1.19749 au 
 Jupiter MOID = 2.41064 au 
 T_jup = 3.536 
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Orbital Elements at Epoch 2456944.5 (2014-Oct-14.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07432871941630632 3.1744e-08  
q 2.199435131376822 7.6578e-08 au
tp 2456283.156564023505
(2012-Dec-21.65656402)
7.5371e-05 TDB
node 227.8355247508284 6.7285e-05 deg
peri 335.1451907962482 7.0216e-05 deg
i 2.602202933960448 3.3245e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2743  
   data-arc span      12085 days (33.09 yr)  
   first obs. used      1987-03-27  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44233  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:06:59  

Additional Information
 Jupiter MOID = 2.41064 au 
 T_jup = 3.536 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.007655891740955E-15 -2.423109463448013E-15 -1.928344134349252E-14 -4.853731775161446E-15 6.599030484868729E-15 -3.956953396687517E-16
q -2.423109463448013E-15 5.864259623217006E-15 -7.192154439741314E-14 1.166632448104393E-14 -4.298378858939246E-14 9.69563471727934E-16
tp -1.928344134349252E-14 -7.192154439741314E-14 5.680854508618212E-9 5.452898030550987E-12 1.520737895447927E-9 -1.19689006390763E-13
node -4.853731775161446E-15 1.166632448104393E-14 5.452898030550987E-12 4.527268935194036E-9 -4.520821549371048E-9 -3.42734971648898E-11
peri 6.599030484868729E-15 -4.298378858939246E-14 1.520737895447927E-9 -4.520821549371048E-9 4.930300664378852E-9 3.420254979708417E-11
i -3.956953396687517E-16 9.69563471727934E-16 -1.19689006390763E-13 -3.42734971648898E-11 3.420254979708417E-11 1.105201228284527E-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 13.5   n/a MPO365300  
diameter diameter 9.520 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.107 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.075   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4377 Koremori (1987 GD)          Discovered 1987-Apr-04 by Niijima and Urata at Ojima
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1987 GD = 1976 GC6 = 1988 SF1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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