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91877 (1999 UK45)
Classification: Main-belt Asteroid          SPK-ID: 2091877
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1224829223867611 4.2749e-08  
a 2.797486280601587 1.5464e-08 au
q 2.454841985616634 1.2011e-07 au
i 10.06531039615403 4.7624e-06 deg
node 305.002682491782 2.2395e-05 deg
peri 217.6966552383294 2.8391e-05 deg
M 14.46138599342475 1.6299e-05 deg
tp 2458931.847273083846
(2020-Mar-23.34727308)
7.734e-05 TDB
period 1709.032709662321
4.68
1.4171e-05
3.88e-08
d
yr
n .2106454709524726 1.7467e-09 deg/d
Q 3.140130575586541 1.7358e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1116  
   data-arc span      7535 days (20.63 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49712  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:43:37  

Additional Information
 Earth MOID = 1.47262 au 
 Jupiter MOID = 1.91194 au 
 T_jup = 3.293 
[ 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 14.4   n/a MPO337941  
diameter diameter 5.264 km 0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.133   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91877 (1999 UK45)          Discovered 1999-Oct-31 by CSS at Catalina
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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