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243378 (2008 XT43)
Classification: Main-belt Asteroid          SPK-ID: 2243378
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09579571272060934 5.1953e-08  
a 3.118194583519335 3.5065e-08 au
q 2.819484910989556 1.5605e-07 au
i 16.04826184912935 6.2803e-06 deg
node 137.6912323174309 1.8735e-05 deg
peri 279.1881325779407 3.9643e-05 deg
M 102.7348156235906 3.3061e-05 deg
tp 2458426.557491993955
(2018-Nov-04.05749199)
0.00018663 TDB
period 2011.190672100949
5.51
3.3925e-05
9.288e-08
d
yr
n .1789984435557934 3.0194e-09 deg/d
Q 3.416904256049113 3.8424e-08 au
  Orbit Determination Parameters
   # obs. used (total)      321  
   data-arc span      7731 days (21.17 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60474  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:56:57  

Additional Information
 Earth MOID = 1.88832 au 
 Jupiter MOID = 1.91128 au 
 T_jup = 3.150 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457789.5 (2017-Feb-05.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09567199042913294 5.1797e-08  
q 2.819477516406024 1.5568e-07 au
tp 2458429.223775152759
(2018-Nov-06.72377515)
0.00018717 TDB
node 137.7079049646454 1.8737e-05 deg
peri 279.7772831300371 3.9757e-05 deg
i 16.04795721455113 6.2802e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      321  
   data-arc span      7731 days (21.17 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60474  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:56:57  

Additional Information
 Jupiter MOID = 1.91128 au 
 T_jup = 3.150 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.682941312894808E-15 -7.909070664605362E-15 -1.797368850320841E-12 -5.818379126551083E-15 -4.480809497035872E-13 -4.43960421972791E-15
q -7.909070664605362E-15 2.423617292232541E-14 4.255599039099977E-12 1.594395755857843E-14 1.076281729481089E-12 1.585849823781647E-14
tp -1.797368850320841E-12 4.255599039099977E-12 3.503326216862802E-8 5.845987886300916E-12 6.572754533624898E-9 -1.163765912860959E-11
node -5.818379126551083E-15 1.594395755857843E-14 5.845987886300916E-12 3.510622753578039E-10 -3.355436568375297E-10 1.107267946888937E-11
peri -4.480809497035872E-13 1.076281729481089E-12 6.572754533624898E-9 -3.355436568375297E-10 1.580646418739979E-9 -1.276972885015355E-11
i -4.43960421972791E-15 1.585849823781647E-14 -1.163765912860959E-11 1.107267946888937E-11 -1.276972885015355E-11 3.944126454001098E-11

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 15.3   n/a MPO470595  
diameter diameter 5.832 km 0.339 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 49.9203 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.036   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243378 (2008 XT43)          Discovered 2008-Dec-02 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

[ show close-approach data ]
Alternate Designations
 2008 XT43 = 2006 QS154 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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