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19509 Niigata (1998 MG38)
Classification: Main-belt Asteroid          SPK-ID: 2019509
[ 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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2144478196596046 6.6496e-08  
a 2.604334813941172 1.2099e-08 au
q 2.045840891427885 1.7021e-07 au
i 12.65346530410535 5.1538e-06 deg
node 246.0989522504753 1.9982e-05 deg
peri 333.1299099965671 2.1846e-05 deg
M 97.07404094822768 7.9803e-06 deg
tp 2458586.553457553960
(2019-Apr-13.05345755)		 3.3881e-05 TDB
period 1535.124672105195
4.20		 1.0698e-05
2.929e-08		 d
yr
n .2345086405954988 1.6342e-09 deg/d
Q 3.162828736454458 1.4694e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1876  
   data-arc span      11607 days (31.78 yr)  
   first obs. used      1989-02-05  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40124  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:11:06  

Additional Information
 Earth MOID = 1.04477 au 
 Jupiter MOID = 1.87248 au 
 T_jup = 3.346 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457649.5 (2016-Sep-18.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2137086747399468 6.6665e-08  
q 2.048835551091417 1.7057e-07 au
tp 2457050.374796268624
(2015-Jan-27.87479627)		 3.5634e-05 TDB
node 246.1187966919411 1.9975e-05 deg
peri 333.1736340008303 2.1846e-05 deg
i 12.65279730518488 5.1549e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1876  
   data-arc span      11607 days (31.78 yr)  
   first obs. used      1989-02-05  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40124  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:11:06  

Additional Information
 Jupiter MOID = 1.87248 au 
 T_jup = 3.346 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.444182778098439E-15 -1.135527389343218E-14 -4.945216709443528E-13 3.063208762016267E-14 -2.737984183791035E-13 5.686431740534091E-15
q -1.135527389343218E-14 2.909376280274532E-14 1.186595237921473E-12 -7.994194673683759E-14 6.926639947854E-13 -1.419289498431223E-14
tp -4.945216709443528E-13 1.186595237921473E-12 1.269753730062008E-9 -5.091737185523082E-12 3.229939544115708E-10 -2.930750827459413E-12
node 3.063208762016267E-14 -7.994194673683759E-14 -5.091737185523082E-12 3.989893261531569E-10 -3.910107018375923E-10 -4.154732542278185E-11
peri -2.737984183791035E-13 6.926639947854E-13 3.229939544115708E-10 -3.910107018375923E-10 4.772499189127508E-10 3.964668307472967E-11
i 5.686431740534091E-15 -1.419289498431223E-14 -2.930750827459413E-12 -4.154732542278185E-11 3.964668307472967E-11 2.657338886649071E-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 14.3   n/a MPO328910  
diameter diameter 7.520 km 0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19509 Niigata           Discovered 1998 June 29 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Niigata prefecture is located on the island of Honshu, Japan. The Asteroids, Comets, Meteors 2012 meeting is to be held at Toki Messe in Niigata city, capital of the prefecture. Niigata is known for high quality rice and sake.
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
 1998 MG38 = 1989 CW3 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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