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101531 (1998 XT97)
Classification: Main-belt Asteroid          SPK-ID: 2101531
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2132848674237817 5.6574e-08  
a 2.335816949000983 9.369e-09 au
q 1.837622540707086 1.366e-07 au
i 3.58105721197071 4.2061e-06 deg
node 63.53175793106753 8.9529e-05 deg
peri 317.3195366480097 9.0576e-05 deg
M 92.88818143330975 1.4887e-05 deg
tp 2458864.054600228825
(2020-Jan-15.55460023)
5.2655e-05 TDB
period 1303.937078417052
3.57
7.8452e-06
2.148e-08
d
yr
n .2760869415854263 1.6611e-09 deg/d
Q 2.834011357294881 1.1367e-08 au
  Orbit Determination Parameters
   # obs. used (total)      459  
   data-arc span      9122 days (24.97 yr)  
   first obs. used      1996-01-28  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52819  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:28:57  

Additional Information
 Earth MOID = .841184 au 
 Jupiter MOID = 2.62624 au 
 T_jup = 3.534 
[ 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 16.5   n/a MPO449615  

101531 (1998 XT97)          Discovered 1998-Dec-11 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2021-Jan-09 00:19 < 00:01 Amphi 0.0104780971359126 0.0104764143177395 0.0104797801679504 3.15460556021704 3.15460538629862 2459223.513240802 0.775354484753848 127.891531976323 53.2537658373729 -56.1467989294731 25357.4971713449 T 18 CATAB v2.0f-lin.ifort 2021-Feb-24 08:28:58 2021-Feb-24 08:28

Alternate Designations
 1998 XT97 = 2003 BZ78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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