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118292 (1998 SE57)
Classification: Main-belt Asteroid          SPK-ID: 2118292
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09718754253514775 4.0604e-08  
a 2.267749546369357 1.109e-08 au
q 2.047352540872523 9.0568e-08 au
i 3.903592170074384 5.27e-06 deg
node 29.1127322239307 6.6413e-05 deg
peri 263.4658346424099 7.3389e-05 deg
M 182.4650113277608 3.4359e-05 deg
tp 2459615.637942913977
(2022-Feb-05.13794291)
0.00012089 TDB
period 1247.35783692682
3.42
9.1499e-06
2.505e-08
d
yr
n .288610043840307 2.1171e-09 deg/d
Q 2.48814655186619 1.2168e-08 au
  Orbit Determination Parameters
   # obs. used (total)      748  
   data-arc span      7782 days (21.31 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56273  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 16:51:47  

Additional Information
 Earth MOID = 1.03577 au 
 Jupiter MOID = 2.64422 au 
 T_jup = 3.606 
[ 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 16.1   n/a MPO348194  
diameter diameter 3.888 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118292 (1998 SE57)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1998 SE57 = 2004 EX59 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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