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101499 (1998 XS7)
Classification: Main-belt Asteroid          SPK-ID: 2101499
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07192875943931451 5.536e-08  
a 2.760785915074526 1.8089e-08 au
q 2.562206009125683 1.6239e-07 au
i 3.768061420364107 4.9872e-06 deg
node 52.54840980883495 7.5033e-05 deg
peri 265.6387962891957 8.3512e-05 deg
M 329.7262883110154 3.5026e-05 deg
tp 2459141.399902517561
(2020-Oct-18.89990252)
0.00016291 TDB
period 1675.511923593378
4.59
1.6467e-05
4.508e-08
d
yr
n .2148597064161309 2.1116e-09 deg/d
Q 2.95936582102337 1.939e-08 au
  Orbit Determination Parameters
   # obs. used (total)      521  
   data-arc span      8974 days (24.57 yr)  
   first obs. used      1996-02-15  
   last obs. used      2020-09-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57847  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:15  

Additional Information
 Earth MOID = 1.5524 au 
 Jupiter MOID = 2.24027 au 
 T_jup = 3.335 
[ 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 15.7   n/a MPO337992  
diameter diameter 3.017 km 0.400 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.112   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101499 (1998 XS7)          Discovered 1998-Dec-09 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 XS7 = 2002 PC155 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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