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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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 
[ show covariance matrix ]

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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