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100975 (1998 QB25)
Classification: Main-belt Asteroid          SPK-ID: 2100975
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1897979996553904 4.257e-08  
a 2.328388363959371 8.7755e-09 au
q 1.886464910058996 1.0032e-07 au
i 3.178501881979233 5.1103e-06 deg
node 148.775133445665 8.867e-05 deg
peri 174.4914759490518 8.9692e-05 deg
M 51.21846389228822 1.445e-05 deg
tp 2458815.868581748259
(2019-Nov-28.36858175)
5.172e-05 TDB
period 1297.721671434872
3.55
7.3365e-06
2.009e-08
d
yr
n .2774092534048177 1.5683e-09 deg/d
Q 2.770311817859747 1.0441e-08 au
  Orbit Determination Parameters
   # obs. used (total)      416  
   data-arc span      10185 days (27.89 yr)  
   first obs. used      1991-10-01  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65121  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:05:14  

Additional Information
 Earth MOID = .874193 au 
 Jupiter MOID = 2.55174 au 
 T_jup = 3.546 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456885.5 (2014-Aug-16.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1895327536096749 4.2463e-08  
q 1.887971416975361 1.0009e-07 au
tp 2457519.078519302079
(2016-May-10.57851930)
4.9944e-05 TDB
node 148.8092422918311 8.87e-05 deg
peri 174.636605331081 8.973e-05 deg
i 3.177254261662496 5.1092e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      416  
   data-arc span      10185 days (27.89 yr)  
   first obs. used      1991-10-01  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65121  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:05:14  

Additional Information
 Jupiter MOID = 2.55174 au 
 T_jup = 3.546 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.803136286692879E-15 -4.239418792873429E-15 1.378003793828679E-14 -7.18394635479583E-15 5.292832750422653E-14 -6.233081530258282E-16
q -4.239418792873429E-15 1.001743593547641E-14 3.124611427138752E-14 1.872853254872125E-14 -1.167114743308446E-13 1.68651650977043E-15
tp 1.378003793828679E-14 3.124611427138752E-14 2.494401428171572E-9 2.348005256715326E-11 6.92728707558641E-10 1.961434639160594E-12
node -7.18394635479583E-15 1.872853254872125E-14 2.348005256715326E-11 7.867634939285857E-9 -7.84886300901054E-9 1.466136676181473E-11
peri 5.292832750422653E-14 -1.167114743308446E-13 6.92728707558641E-10 -7.84886300901054E-9 8.051451612506908E-9 -1.414108784486606E-11
i -6.233081530258282E-16 1.68651650977043E-15 1.961434639160594E-12 1.466136676181473E-11 -1.414108784486606E-11 2.610384750528026E-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 16.6   n/a MPO337988  
diameter diameter 3.359 km 0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100975 (1998 QB25)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 QB25 = 2002 WR9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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