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91249 (1999 CQ44)
Classification: Main-belt Asteroid          SPK-ID: 2091249
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07406631729977395 3.7039e-08  
a 2.414205488265695 1.3607e-08 au
q 2.235394178544952 8.6592e-08 au
i 7.952858967776105 4.4094e-06 deg
node 90.76891425227861 3.3553e-05 deg
peri 133.558740549272 4.925e-05 deg
M 172.9131178141386 3.6488e-05 deg
tp 2458342.410112797697
(2018-Aug-11.91011280)
0.00013855 TDB
period 1370.123692104621
3.75
1.1584e-05
3.172e-08
d
yr
n .2627499999266569 2.2214e-09 deg/d
Q 2.593016797986438 1.4615e-08 au
  Orbit Determination Parameters
   # obs. used (total)      565  
   data-arc span      7566 days (20.71 yr)  
   first obs. used      1999-02-10  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5621  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:53:56  

Additional Information
 Earth MOID = 1.23285 au 
 Jupiter MOID = 2.40455 au 
 T_jup = 3.501 
[ 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 15.8   n/a MPO436410  
diameter diameter 2.013 km 0.491 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.251   0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91249 (1999 CQ44)          Discovered 1999-Feb-10 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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