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26428 (1999 XR169)
Classification: Main-belt Asteroid          SPK-ID: 2026428
[ 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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09066815290061536 3.4713e-08  
a 2.451547182234509 1.0485e-08 au
q 2.229269927472597 8.3066e-08 au
i 11.17300958930004 3.875e-06 deg
node 281.6998312572618 2.367e-05 deg
peri 198.5366574394624 3.6943e-05 deg
M 93.50537306860626 2.8986e-05 deg
tp 2458636.339465775572
(2019-Jun-01.83946578)		 0.00011213 TDB
period 1402.034856591671
3.84		 8.9943e-06
2.463e-08		 d
yr
n .2567696504173623 1.6472e-09 deg/d
Q 2.673824436996419 1.1435e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1727  
   data-arc span      12015 days (32.90 yr)  
   first obs. used      1987-09-22  
   last obs. used      2020-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45306  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:29:01  

Additional Information
 Earth MOID = 1.24816 au 
 Jupiter MOID = 2.43776 au 
 T_jup = 3.464 
[ 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 13.92   n/a E2021B10  
diameter diameter 7.010 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.207   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26428 (1999 XR169)          Discovered 1999-Dec-10 by LINEAR at Socorro
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XR169 = 1987 SB14 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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