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JPL Small-Body Database Browser
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49557 (1999 CQ91)
Classification: Main-belt Asteroid          SPK-ID: 2049557
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06510228116200728 4.2675e-08  
a 3.139801448151764 2.4047e-08 au
q 2.935393211481311 1.4177e-07 au
i 9.762821816042354 4.3681e-06 deg
node 138.8798896478428 2.8513e-05 deg
peri 278.0986951386781 4.5963e-05 deg
M 302.9388645856145 3.5308e-05 deg
tp 2458922.599175656223
(2020-Mar-14.09917566)
0.00019916 TDB
period 2032.131018672424
5.56
2.3346e-05
6.392e-08
d
yr
n .1771539318538552 2.0352e-09 deg/d
Q 3.344209684822218 2.5613e-08 au
  Orbit Determination Parameters
   # obs. used (total)      997  
   data-arc span      8542 days (23.39 yr)  
   first obs. used      1996-07-14  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54719  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:21:13  

Additional Information
 Earth MOID = 1.96813 au 
 Jupiter MOID = 1.89598 au 
 T_jup = 3.185 
[ 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 14.0   n/a MPO333249  
diameter diameter 5.445 km 0.203 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.197   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49557 (1999 CQ91)          Discovered 1999-Feb-10 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 CQ91 = 2000 GW164 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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