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120986 (1998 XM17)
Classification: Main-belt Asteroid          SPK-ID: 2120986
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1135436024824632 4.7826e-08  
a 2.322038915675454 1.0458e-08 au
q 2.058386252085191 1.1497e-07 au
i 21.63602841380709 6.0337e-06 deg
node 238.3622628073945 1.1078e-05 deg
peri 218.3951939204078 2.9621e-05 deg
M 15.45787539211143 2.6417e-05 deg
tp 2458945.005496644434
(2020-Apr-05.50549664)
9.4752e-05 TDB
period 1292.417017295857
3.54
8.731e-06
2.39e-08
d
yr
n .2785478643365693 1.8817e-09 deg/d
Q 2.585691579265718 1.1645e-08 au
  Orbit Determination Parameters
   # obs. used (total)      677  
   data-arc span      7738 days (21.19 yr)  
   first obs. used      1998-11-23  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4761  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:25:21  

Additional Information
 Earth MOID = 1.09891 au 
 Jupiter MOID = 2.76096 au 
 T_jup = 3.475 
[ 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 15.7   n/a MPO348206  
diameter diameter 1.971 km 0.550 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.287   0.238 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120986 (1998 XM17)          Discovered 1998-Dec-15 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1998 XM17 = 2001 QE191 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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