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344965 (2004 XH20)
Classification: Main-belt Asteroid          SPK-ID: 2344965
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09227106322992704 7.628e-08  
a 2.563239406145183 3.6624e-08 au
q 2.32672658082732 2.1475e-07 au
i 14.26125613673309 1.0746e-05 deg
node 80.95032765838613 2.4802e-05 deg
peri 279.7515428931518 6.4383e-05 deg
M 252.0244499418886 5.848e-05 deg
tp 2459050.078058943789
(2020-Jul-19.57805894)
0.00024552 TDB
period 1498.932870753232
4.10
3.2125e-05
8.795e-08
d
yr
n .2401708622342078 5.1473e-09 deg/d
Q 2.799752231463045 4.0003e-08 au
  Orbit Determination Parameters
   # obs. used (total)      193  
   data-arc span      5368 days (14.70 yr)  
   first obs. used      2004-12-08  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60486  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:31:21  

Additional Information
 Earth MOID = 1.37501 au 
 Jupiter MOID = 2.59548 au 
 T_jup = 3.385 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457585.5 (2016-Jul-16.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09323145423980714 7.6844e-08  
q 2.323096344860587 2.1632e-07 au
tp 2457553.954992960874
(2016-Jun-14.45499296)
0.00023708 TDB
node 80.96191955337123 2.4822e-05 deg
peri 280.1963524138548 6.3665e-05 deg
i 14.25796870211693 1.0744e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      193  
   data-arc span      5368 days (14.70 yr)  
   first obs. used      2004-12-08  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60486  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:31:21  

Additional Information
 Jupiter MOID = 2.59548 au 
 T_jup = 3.385 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.904957785329626E-15 -1.648087734261859E-14 7.978261135766092E-12 -5.23508646741627E-14 2.031488345341276E-12 -8.17977166480034E-15
q -1.648087734261859E-14 4.679606216687679E-14 -1.977885392443498E-11 1.370173719607944E-13 -5.061032674801266E-12 2.33743892241672E-14
tp 7.978261135766092E-12 -1.977885392443498E-11 5.620759750154576E-8 -1.573202448885179E-10 1.392632523199872E-8 -6.879470825560163E-11
node -5.23508646741627E-14 1.370173719607944E-13 -1.573202448885179E-10 6.161332270040536E-10 -6.347431478901052E-10 -8.786045313551976E-11
peri 2.031488345341276E-12 -5.061032674801266E-12 1.392632523199872E-8 -6.347431478901052E-10 4.05326448718673E-9 6.827983320884568E-11
i -8.17977166480034E-15 2.33743892241672E-14 -6.879470825560163E-11 -8.786045313551976E-11 6.827983320884568E-11 1.154352666801779E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO437461  

344965 (2004 XH20)          Discovered 2004-Dec-08 by LINEAR at Socorro
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

Alternate Designations
 2004 XH20 = 2008 VC77 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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