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5240 Kwasan (1990 XE)
Classification: Main-belt Asteroid          SPK-ID: 2005240
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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1013109276690327 1.5201e-08  
a 2.38276127680935 6.9346e-09 au
q 2.141361521441945 3.7179e-08 au
i 5.61460982096186 5.4456e-07 deg
node 241.9282085165756 5.4818e-06 deg
peri 186.4919354496492 8.9994e-06 deg
M 72.21746503842245 1.0262e-05 deg
tp 2458930.999877864351
(2020-Mar-22.49987786)
3.8127e-05 TDB
period 1343.442945791786
3.68
5.8648e-06
1.606e-08
d
yr
n .2679682089423056 1.1698e-09 deg/d
Q 2.624161032176754 7.6372e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2948  
   data-arc span      17528 days (47.99 yr)  
   first obs. used      1973-03-27  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42955  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 22:08:28  

Additional Information
 Earth MOID = 1.15485 au 
 Jupiter MOID = 2.6211 au 
 T_jup = 3.524 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457236.5 (2015-Aug-02.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1004627699361607 1.5155e-08  
q 2.143623329177087 3.7013e-08 au
tp 2457584.879212016215
(2016-Jul-15.37921202)
3.822e-05 TDB
node 241.9711360177854 5.4872e-06 deg
peri 185.8032601404873 9.0755e-06 deg
i 5.609787598820606 5.4373e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2948  
   data-arc span      17528 days (47.99 yr)  
   first obs. used      1973-03-27  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42955  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 22:08:28  

Additional Information
 Jupiter MOID = 2.6211 au 
 T_jup = 3.524 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.296685116897699E-16 -5.529828838453167E-16 -1.186270368015556E-13 2.105782360036266E-14 -3.428408795503222E-14 1.768063506814383E-15
q -5.529828838453167E-16 1.369981910929552E-15 2.766017677703606E-13 -4.935597892711274E-14 7.616354815739072E-14 -4.154448918979442E-15
tp -1.186270368015556E-13 2.766017677703606E-13 1.46077714175158E-9 7.196637203347564E-11 2.893007260540029E-10 6.328578546744066E-12
node 2.105782360036266E-14 -4.935597892711274E-14 7.196637203347564E-11 3.010951317930335E-11 -1.050693612964449E-11 2.785272496269731E-12
peri -3.428408795503222E-14 7.616354815739072E-14 2.893007260540029E-10 -1.050693612964449E-11 8.236472764399912E-11 -1.079529487238678E-12
i 1.768063506814383E-15 -4.154448918979442E-15 6.328578546744066E-12 2.785272496269731E-12 -1.079529487238678E-12 2.956389004364596E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.71   n/a MPCxxxxx  
diameter diameter 7.021 km 0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.673 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Albers, K.; Kragh, K.; Monnier, A.; Pligge, Z.; et al. (2010) Minor Planet Bull. 37, 152-158.]
[Clark, M. (2016) Minor Planet Bull. 43, 132-135.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.393   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B V   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

5240 Kwasan (1990 XE)          Discovered 1990-Dec-07 by Suzuki and Urata at Toyota
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1990 XE = 1953 VF = 1964 VJ1 = 1971 SE2 = 1973 FZ = 1975 XS = 1979 XX = 1981 JA1 = 1981 JV2 = 1986 TX15 = 1986 UE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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