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43144 (1999 XD98)
Classification: Main-belt Asteroid          SPK-ID: 2043144
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .221084403419164 3.9512e-08  
a 2.571651247386293 9.1365e-09 au
q 2.003099265555746 1.0439e-07 au
i 12.10559967260962 3.5155e-06 deg
node 261.4861868579032 2.1158e-05 deg
peri 104.0203699005698 2.3353e-05 deg
M 87.17387252854081 9.8607e-06 deg
tp 2458835.745739992321
(2019-Dec-18.24573999)
4.0432e-05 TDB
period 1506.317544396953
4.12
8.0274e-06
2.198e-08
d
yr
n .2389934322541031 1.2736e-09 deg/d
Q 3.140203229216841 1.1156e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1641  
   data-arc span      8304 days (22.74 yr)  
   first obs. used      1998-06-24  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48005  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:24:10  

Additional Information
 Earth MOID = 1.0415 au 
 Jupiter MOID = 2.49997 au 
 T_jup = 3.364 
[ 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 14.41   n/a MPCxxxxx  
diameter diameter 3.567 km 0.520 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.349   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43144 (1999 XD98)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XD98 = 1998 MK21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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