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146722 (2001 XA9)
Classification: Main-belt Asteroid          SPK-ID: 2146722
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1603937719807891 5.7935e-08  
a 2.795243023034327 2.4104e-08 au
q 2.346903450966867 1.5632e-07 au
i 8.249996412263835 5.1821e-06 deg
node 294.9433414542325 4.0481e-05 deg
peri 252.8891567653876 4.3203e-05 deg
M 245.9317932114661 1.5842e-05 deg
tp 2459541.366270207880
(2021-Nov-22.86627021)
7.8161e-05 TDB
period 1706.977454601392
4.67
2.208e-05
6.045e-08
d
yr
n .2108990947886105 2.728e-09 deg/d
Q 3.243582595101786 2.797e-08 au
  Orbit Determination Parameters
   # obs. used (total)      368  
   data-arc span      6561 days (17.96 yr)  
   first obs. used      2001-12-09  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57437  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 13:01:05  

Additional Information
 Earth MOID = 1.36467 au 
 Jupiter MOID = 1.82693 au 
 T_jup = 3.293 
[ 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 15.6   n/a MPO453933  

146722 (2001 XA9)          Discovered 2001-Dec-09 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ 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
1916-Dec-06 19:57 00:05 Jupiter 1.93100099005806 1.93099908697798 1.93100289313464 2.0028682504253 1.77036512972416 2421204.331557722 4.82318129566703 172.481510002014 42.2640658318109 -52.1664896667011 835664.607119203 T 16 CATAB v2.0f-lin.ifort 2019-Dec-04 13:01:07 2019-Dec-04 13:01
1940-Jan-15 02:18 00:04 Jupiter 1.84447144987752 1.84447054667057 1.84447235308415 1.62021152040165 1.30638457912579 2429643.595530217 3.51610575273425 153.503604111696 72.6050626871279 61.0380310021663 1757398.5884804 T 16 CATAB v2.0f-lin.ifort 2019-Dec-04 13:01:07 2019-Dec-04 13:01
1963-Mar-05 23:21 00:02 Jupiter 1.83631339305214 1.83631287309457 1.8363139130097 2.05429956902227 1.81593549144939 2438094.473129201 2.26453287206674 501.698866016092 30.9709624276703 82.0515074905846 2190014.30680516 T 16 CATAB v2.0f-lin.ifort 2019-Dec-04 13:01:07 2019-Dec-04 13:01
1986-Apr-23 21:53 00:01 Jupiter 1.9139431646766 1.91394260860404 1.91394372074905 2.81633376750113 2.65454866377884 2446544.411952569 1.21213301702099 199.700151165597 18.9204234740228 86.3639489209343 2026738.38238867 T 16 CATAB v2.0f-lin.ifort 2019-Dec-04 13:01:07 2019-Dec-04 13:01
2094-Oct-15 23:06 00:03 Jupiter 1.89813188939116 1.89813102867638 1.89813275010476 1.87531844137125 1.61998120589919 2486166.462489812 3.16780981913433 125.853300031365 56.9374927702737 -42.2674157676038 966131.01669552 T 16 CATAB v2.0f-lin.ifort 2019-Dec-04 13:01:07 2019-Dec-04 13:01
2117-Nov-27 07:12 00:04 Jupiter 1.83997876875145 1.83997822665224 1.83997931085119 1.58800579558524 1.26533597737486 2494608.800230597 4.2034974204 316.758867991869 73.2682844147203 57.5476411955184 2101174.43394519 T 16 CATAB v2.0f-lin.ifort 2019-Dec-04 13:01:07 2019-Dec-04 13:01
2141-Jan-15 04:56 00:05 Jupiter 1.85316425305169 1.8531630403703 1.85316546585181 2.08466842869031 1.85248643340713 2503058.705631051 5.31789016953919 902.204185595989 29.0529032045959 81.7638292520775 2103175.90321426 T 16 CATAB v2.0f-lin.ifort 2019-Dec-04 13:01:07 2019-Dec-04 13:01
2164-Mar-02 03:17 00:06 Jupiter 1.95493249477984 1.95492967296492 1.95493531659331 2.93039883100696 2.77861263753682 2511505.637132583 6.45348265055149 203.374474365703 60.9828390531525 -81.4698717613971 486623.505170031 T 16 CATAB v2.0f-lin.ifort 2019-Dec-04 13:01:07 2019-Dec-04 13:01
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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