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137000 (1998 SH78)
Classification: Main-belt Asteroid          SPK-ID: 2137000
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09615205663347291 5.0187e-08  
a 2.437078969019459 1.288e-08 au
q 2.202748813970055 1.2273e-07 au
i 3.568093994052763 4.6079e-06 deg
node 286.8464452065722 7.8752e-05 deg
peri 56.08718497270499 8.1242e-05 deg
M 264.9657711280171 2.0692e-05 deg
tp 2459367.343124752501
(2021-Jun-01.84312475)
8.076e-05 TDB
period 1389.641674146673
3.80
1.1017e-05
3.016e-08
d
yr
n .2590595883079446 2.0537e-09 deg/d
Q 2.671409124068864 1.4119e-08 au
  Orbit Determination Parameters
   # obs. used (total)      442  
   data-arc span      21675 days (59.34 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57207  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 07:43:31  

Additional Information
 Earth MOID = 1.19679 au 
 Jupiter MOID = 2.65157 au 
 T_jup = 3.495 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457177.5 (2015-Jun-04.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09490215374527791 5.0102e-08  
q 2.207256144427928 1.2221e-07 au
tp 2456586.035524705170
(2013-Oct-20.53552471)
7.7983e-05 TDB
node 286.9451330299492 7.8644e-05 deg
peri 55.75354421236948 8.1219e-05 deg
i 3.569729885639584 4.6111e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      442  
   data-arc span      21675 days (59.34 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57207  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 07:43:31  

Additional Information
 Jupiter MOID = 2.65157 au 
 T_jup = 3.495 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.510185542676739E-15 -6.094556380628562E-15 -2.781478377991245E-13 2.175162027215444E-14 -1.004253893700823E-13 -1.098676024092415E-15
q -6.094556380628562E-15 1.493609917953314E-14 7.227753954459393E-13 -4.950038408950677E-14 2.644727916598277E-13 2.917518426183711E-15
tp -2.781478377991245E-13 7.227753954459393E-13 6.081403396686317E-9 2.597969336098374E-12 1.608823952020594E-9 1.411844482357715E-12
node 2.175162027215444E-14 -4.950038408950677E-14 2.597969336098374E-12 6.184804309048127E-9 -6.171532583365314E-9 1.256739568629499E-10
peri -1.004253893700823E-13 2.644727916598277E-13 1.608823952020594E-9 -6.171532583365314E-9 6.596559713434353E-9 -1.250307671726142E-10
i -1.098676024092415E-15 2.917518426183711E-15 1.411844482357715E-12 1.256739568629499E-10 -1.250307671726142E-10 2.126227095846408E-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 16.3   n/a MPO436676  

137000 (1998 SH78)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

Alternate Designations
 1998 SH78 = 4210 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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