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160663 (1999 XK259)
Classification: Main-belt Asteroid          SPK-ID: 2160663
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1404692003717958 4.3962e-08  
a 2.613083445065409 1.2056e-08 au
q 2.246025703032294 1.1877e-07 au
i 12.93653374928808 3.4156e-06 deg
node 140.7577214719518 1.9335e-05 deg
peri 285.4961896860119 2.4302e-05 deg
M 347.8943305893607 1.2696e-05 deg
tp 2459252.381754417366
(2021-Feb-06.88175442)
5.433e-05 TDB
period 1542.866483189835
4.22
1.0678e-05
2.923e-08
d
yr
n .2333319207607062 1.6148e-09 deg/d
Q 2.980141187098524 1.375e-08 au
  Orbit Determination Parameters
   # obs. used (total)      873  
   data-arc span      7786 days (21.32 yr)  
   first obs. used      1999-10-09  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47558  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:02:16  

Additional Information
 Earth MOID = 1.29974 au 
 Jupiter MOID = 2.34599 au 
 T_jup = 3.359 
[ 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 15.40   n/a E2021B55  

160663 (1999 XK259)          Discovered 1999-Dec-09 by LONEOS at Anderson Mesa
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

[ 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
2106-Jan-05 12:45 00:10 Hebe 0.0178574511306449 0.0178510642232535 0.0178638713360802 2.48423210642309 2.48423196628832 2490265.030939185 9.52281305903704 1271.50137613519 52.83737066026 75.6820290545921 48910.6061967413 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 20:02:18 2021-Apr-13 20:02
2119-Feb-08 17:04 00:03 Amphi 0.0156601169074184 0.0156401822833099 0.0156800739052632 6.09687712841058 6.09687706820031 2495047.211182302 2.59946529193215 1364.11198822557 35.1827520284271 -43.2173873102743 45601.004066821 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 20:02:18 2021-Apr-13 20:02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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