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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07140032496758143 5.5351e-08  
a 2.759465796734764 1.8304e-08 au
q 2.562439042110976 1.6229e-07 au
i 3.767108570618271 4.9862e-06 deg
node 52.50023886993059 7.5088e-05 deg
peri 265.3430966763805 8.3707e-05 deg
M 13.00222693076366 3.528e-05 deg
tp 2459140.028437429303
(2020-Oct-17.52843743)
0.00016412 TDB
period 1674.310304025165
4.58
1.6659e-05
4.561e-08
d
yr
n .2150139070007116 2.1394e-09 deg/d
Q 2.956492551358552 1.9611e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57848  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:04  

Additional Information
 Earth MOID = 1.55059 au 
 Jupiter MOID = 2.23971 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 15.69   n/a E2021B55  
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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