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19735 (1999 XN212)
Classification: Main-belt Asteroid          SPK-ID: 2019735
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1764151405855143 1.6257e-08  
a 2.610688535251525 9.2644e-09 au
q 2.150123550280137 4.227e-08 au
i 14.52681555519318 9.2425e-07 deg
node 75.27160312608643 4.6386e-06 deg
peri 219.8764866814188 8.9172e-06 deg
M 143.4103229362443 6.4447e-06 deg
tp 2458782.725370461133
(2019-Oct-26.22537046)
2.6195e-05 TDB
period 1540.745896878173
4.22
8.2014e-06
2.245e-08
d
yr
n .2336530642265052 1.2437e-09 deg/d
Q 3.071253520222914 1.0899e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2236  
   data-arc span      15981 days (43.75 yr)  
   first obs. used      1977-07-12  
   last obs. used      2021-04-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43948  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:46:10  

Additional Information
 Earth MOID = 1.15328 au 
 Jupiter MOID = 2.13711 au 
 T_jup = 3.343 
[ 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 13.26   n/a MPCxxxxx  
diameter diameter 5.372 km 0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.423   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19735 (1999 XN212)          Discovered 1999-Dec-14 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XN212 = 1998 MH22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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