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65998 (1998 MX40)
Classification: Main-belt Asteroid          SPK-ID: 2065998
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2331592463853958 4.0517e-08  
a 2.766899491443278 1.5696e-08 au
q 2.121771291194229 1.115e-07 au
i 8.777827356895923 4.4722e-06 deg
node 91.29279745836372 3.4206e-05 deg
peri 244.8839913751052 3.598e-05 deg
M 240.2359551817048 1.2308e-05 deg
tp 2459559.758323558817
(2021-Dec-11.25832356)
5.9054e-05 TDB
period 1681.080467736662
4.60
1.4305e-05
3.916e-08
d
yr
n .2141479880999922 1.8223e-09 deg/d
Q 3.412027691692328 1.9356e-08 au
  Orbit Determination Parameters
   # obs. used (total)      894  
   data-arc span      7885 days (21.59 yr)  
   first obs. used      1998-06-24  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56231  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 14:49:23  

Additional Information
 Earth MOID = 1.12952 au 
 Jupiter MOID = 2.02479 au 
 T_jup = 3.282 
[ show covariance matrix ]

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 14.8   n/a MPO385236  
diameter diameter 6.474 km 0.254 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

65998 (1998 MX40)          Discovered 1998-Jun-28 by Elst, E. W. at La Silla
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 MX40 = 1999 XN75 = 2000 AT255 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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