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259688 (2003 XN21)
Classification: Main-belt Asteroid          SPK-ID: 2259688
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1569326363318778 5.9452e-08  
a 2.311271432974126 1.2218e-08 au
q 1.94855751371894 1.434e-07 au
i 4.215739534870787 4.9186e-06 deg
node 46.2620608474247 8.2607e-05 deg
peri 8.40207601539672 8.54e-05 deg
M 332.5306366419588 2.4434e-05 deg
tp 2459298.431170985372
(2021-Mar-24.93117099)
8.7458e-05 TDB
period 1283.437882968394
3.51
1.0177e-05
2.786e-08
d
yr
n .2804966292309959 2.2241e-09 deg/d
Q 2.673985352229312 1.4135e-08 au
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      7739 days (21.19 yr)  
   first obs. used      1999-10-08  
   last obs. used      2020-12-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55236  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 14:02:26  

Additional Information
 Earth MOID = .959279 au 
 Jupiter MOID = 2.66912 au 
 T_jup = 3.564 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457853.5 (2017-Apr-10.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1583580572468155 5.9818e-08  
q 1.945330053323567 1.4451e-07 au
tp 2458013.159241271307
(2017-Sep-16.65924127)
8.1803e-05 TDB
node 46.32845657533511 8.244e-05 deg
peri 7.986759432117783 8.5159e-05 deg
i 4.220881725730121 4.9245e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      7739 days (21.19 yr)  
   first obs. used      1999-10-08  
   last obs. used      2020-12-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55236  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 14:02:26  

Additional Information
 Jupiter MOID = 2.66912 au 
 T_jup = 3.564 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.578225809694575E-15 -8.629487719804434E-15 -2.776773075807688E-12 -2.315491099737696E-15 -5.896214655614683E-13 -1.073844494933995E-14
q -8.629487719804434E-15 2.088434274855899E-14 6.736043117527541E-12 4.706324140538053E-15 1.431643949356408E-12 2.62206123797394E-14
tp -2.776773075807688E-12 6.736043117527541E-12 6.691758663641132E-9 4.45609264123985E-11 1.778986362114503E-9 1.692948273540928E-11
node -2.315491099737696E-15 4.706324140538053E-15 4.45609264123985E-11 6.796344986730524E-9 -6.764314218741762E-9 -2.048448127910896E-10
peri -5.896214655614683E-13 1.431643949356408E-12 1.778986362114503E-9 -6.764314218741762E-9 7.251999972819077E-9 2.086649177213236E-10
i -1.073844494933995E-14 2.62206123797394E-14 1.692948273540928E-11 -2.048448127910896E-10 2.086649177213236E-10 2.425026790434417E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.3   n/a MPO433692  

259688 (2003 XN21)          Discovered 2003-Dec-14 by Spacewatch at Kitt Peak
Reference: 20110119/Numbers.arcLast Updated: 2011-01-25
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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