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393927 (2005 UA99)
Classification: Main-belt Asteroid          SPK-ID: 2393927
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0698020102705235 5.6246e-08  
a 3.136222281861038 5.4941e-08 au
q 2.917307661931929 1.962e-07 au
i 10.42140895836175 6.7598e-06 deg
node 73.7916932627675 3.1927e-05 deg
peri 232.8466597627841 6.3672e-05 deg
M 319.2117366802968 6.0899e-05 deg
tp 2459230.348352128518
(2021-Jan-15.84835213)
0.00034585 TDB
period 2028.657266373373
5.55
5.3308e-05
1.459e-07
d
yr
n .1774572797324072 4.6631e-09 deg/d
Q 3.355136901790147 5.8776e-08 au
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      4970 days (13.61 yr)  
   first obs. used      2005-10-22  
   last obs. used      2019-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67127  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:10:28  

Additional Information
 Earth MOID = 1.91607 au 
 Jupiter MOID = 1.81511 au 
 T_jup = 3.182 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457334.5 (2015-Nov-08.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06850271575559148 5.5884e-08  
q 2.920798617228933 1.9465e-07 au
tp 2457209.971186347769
(2015-Jul-06.47118635)
0.00033167 TDB
node 73.79800321631365 3.1928e-05 deg
peri 234.0366352688662 6.4693e-05 deg
i 10.42159252780342 6.76e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      4970 days (13.61 yr)  
   first obs. used      2005-10-22  
   last obs. used      2019-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67127  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:10:28  

Additional Information
 Jupiter MOID = 1.81511 au 
 T_jup = 3.182 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.123024809357083E-15 -1.050356091793659E-14 -5.156623314302755E-12 -5.889378702144722E-15 -8.257087478996032E-13 -1.588191256883617E-15
q -1.050356091793659E-14 3.788863060154163E-14 2.161412780562947E-11 2.73020448055374E-14 3.509515060017562E-12 9.922095452333212E-15
tp -5.156623314302755E-12 2.161412780562947E-11 1.100018400723322E-7 8.373924949030338E-11 1.870168321499409E-8 3.395759967360843E-11
node -5.889378702144722E-15 2.73020448055374E-14 8.373924949030338E-11 1.019368236049789E-9 -9.878937455583279E-10 -2.452454644741945E-11
peri -8.257087478996032E-13 3.509515060017562E-12 1.870168321499409E-8 -9.878937455583279E-10 4.185195793473697E-9 2.984485873748796E-11
i -1.588191256883617E-15 9.922095452333212E-15 3.395759967360843E-11 -2.452454644741945E-11 2.984485873748796E-11 4.569775357799053E-11

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 15.6   n/a MPO437613  

393927 (2005 UA99)          Discovered 2005-Oct-22 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-05-15

[ show close-approach data ]
Alternate Designations
 2005 UA99 = 2011 XZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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