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27930 Nakamatsu (1997 GN6)
Classification: Main-belt Asteroid          SPK-ID: 2027930
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04712962850915802 6.2958e-08  
a 2.564960818778517 1.2475e-08 au
q 2.444075168248939 1.6012e-07 au
i 6.825683928169627 5.9292e-06 deg
node 212.1055913901789 2.9343e-05 deg
peri 192.1801564894767 6.9635e-05 deg
M 37.54066902209536 5.829e-05 deg
tp 2458844.034339694779
(2019-Dec-26.53433969)
0.00024333 TDB
period 1500.44309750385
4.11
1.0947e-05
2.997e-08
d
yr
n .2399291253356419 1.7505e-09 deg/d
Q 2.685846469308094 1.3063e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1020  
   data-arc span      8333 days (22.81 yr)  
   first obs. used      1997-04-02  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50411  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:13:06  

Additional Information
 Earth MOID = 1.45257 au 
 Jupiter MOID = 2.50194 au 
 T_jup = 3.421 
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Orbital Elements at Epoch 2457065.5 (2015-Feb-12.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04678502406701675 6.4153e-08  
q 2.445079457925489 1.6311e-07 au
tp 2457334.751968331878
(2015-Nov-08.25196833)
0.00024414 TDB
node 212.1296993738541 2.9351e-05 deg
peri 190.0762363303368 6.8903e-05 deg
i 6.823267289130347 5.9304e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1020  
   data-arc span      8333 days (22.81 yr)  
   first obs. used      1997-04-02  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50411  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:13:06  

Additional Information
 Jupiter MOID = 2.50194 au 
 T_jup = 3.421 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.115577697776444E-15 -1.04373340887013E-14 -9.483170807430088E-12 4.154487321971958E-14 -2.482877370372423E-12 9.979048791481691E-16
q -1.04373340887013E-14 2.66062341032193E-14 2.327665380427933E-11 -1.056120842306774E-13 6.09938035230852E-12 -2.278445956343285E-15
tp -9.483170807430088E-12 2.327665380427933E-11 5.960495278636074E-8 -1.169765966106527E-10 1.522482189967545E-8 -6.612715933422541E-12
node 4.154487321971958E-14 -1.056120842306774E-13 -1.169765966106527E-10 8.615094003502348E-10 -8.84960873098588E-10 -2.408360973542802E-11
peri -2.482877370372423E-12 6.09938035230852E-12 1.522482189967545E-8 -8.84960873098588E-10 4.747679613470485E-9 2.222314593536213E-11
i 9.979048791481691E-16 -2.278445956343285E-15 -6.612715933422541E-12 -2.408360973542802E-11 2.222314593536213E-11 3.516938806029546E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO502367  
diameter diameter 4.671 km 0.189 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27930 Nakamatsu           Discovered 1997 Apr. 2 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Kathy Nakamatsu mentored a finalist in the 2012 Intel Science Talent Search, a science competition for high-school seniors. She teaches at the Saratoga High School, Saratoga, California.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

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Alternate Designations
 1997 GN6 = 2001 FU161 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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