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15198 (1940 GJ)
Classification: Main-belt Asteroid          SPK-ID: 2015198
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2249923839682746 3.4512e-08  
a 2.32969289137149 8.5352e-09 au
q 1.805529733827876 8.0165e-08 au
i 24.98447020788938 5.7913e-06 deg
node 35.16081184581481 8.711e-06 deg
peri 229.124178558275 1.7682e-05 deg
M 152.2166760221527 1.8178e-05 deg
tp 2458451.330800169253
(2018-Nov-28.83080017)
6.4401e-05 TDB
period 1298.81243701772
3.56
7.1376e-06
1.954e-08
d
yr
n .2771762802230454 1.5232e-09 deg/d
Q 2.853856048915104 1.0456e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1941  
   data-arc span      29429 days (80.57 yr)  
   first obs. used      1940-04-04  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4333  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:35:09  

Additional Information
 Earth MOID = .858619 au 
 Jupiter MOID = 2.32755 au 
 T_jup = 3.415 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457038.5 (2015-Jan-16.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2246724616817776 3.4457e-08  
q 1.806050934266374 7.9984e-08 au
tp 2457153.011716506861
(2015-May-10.51171651)
6.2321e-05 TDB
node 35.16958335074541 8.7087e-06 deg
peri 229.1851855735978 1.7725e-05 deg
i 24.98863827122611 5.7925e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1941  
   data-arc span      29429 days (80.57 yr)  
   first obs. used      1940-04-04  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4333  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:35:09  

Additional Information
 Jupiter MOID = 2.32755 au 
 T_jup = 3.415 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.187258020331928E-15 -2.746581180369023E-15 -7.460193832344509E-13 -1.254197247849992E-15 -1.971696638066128E-13 1.054695256532303E-15
q -2.746581180369023E-15 6.39747470538712E-15 1.845505421930929E-12 2.933023559239669E-15 4.82343991463964E-13 -1.519061203689672E-15
tp -7.460193832344509E-13 1.845505421930929E-12 3.883886416182982E-9 1.889916182340634E-12 9.713871243692341E-10 1.144014163153791E-11
node -1.254197247849992E-15 2.933023559239669E-15 1.889916182340634E-12 7.584129400245453E-11 -6.780927560488033E-11 -1.302081855756867E-11
peri -1.971696638066128E-13 4.82343991463964E-13 9.713871243692341E-10 -6.780927560488033E-11 3.141639461767654E-10 1.466388840760394E-11
i 1.054695256532303E-15 -1.519061203689672E-15 1.144014163153791E-11 -1.302081855756867E-11 1.466388840760394E-11 3.355285082354248E-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 13.6   n/a MPO395151  
diameter diameter 4.255 km 0.253 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.334   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

15198 (1940 GJ)          Discovered 1940-Apr-05 by Oterma, L. at Turku
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1940 GJ = 2000 DL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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