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91147 (1998 OM2)
Classification: Main-belt Asteroid          SPK-ID: 2091147
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02377346008528881 4.6542e-08  
a 3.14758121311039 2.2811e-08 au
q 3.072752316775305 1.4519e-07 au
i 1.752313560088568 3.8652e-06 deg
node 268.6936613239904 0.00016101 deg
peri 270.4109018033143 0.00018134 deg
M 166.0406758395522 8.2214e-05 deg
tp 2458455.746516238834
(2018-Dec-03.24651624)
0.00046749 TDB
period 2039.688482605813
5.58
2.2172e-05
6.07e-08
d
yr
n .1764975402224561 1.9186e-09 deg/d
Q 3.222410109445474 2.3353e-08 au
  Orbit Determination Parameters
   # obs. used (total)      769  
   data-arc span      8423 days (23.06 yr)  
   first obs. used      1998-07-16  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53301  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:01:38  

Additional Information
 Earth MOID = 2.0762 au 
 Jupiter MOID = 1.74476 au 
 T_jup = 3.207 
[ show covariance matrix ]

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 14.77   n/a MPO637239  
diameter diameter 4.264 km 1.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.140   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91147 (1998 OM2)          Discovered 1998-Jul-16 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 OM2 = 2000 YW57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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