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227400 (2005 UK398)
Classification: Main-belt Asteroid          SPK-ID: 2227400
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1164645772788191 4.3662e-08  
a 2.48455354340013 1.9289e-08 au
q 2.195191065241441 1.1419e-07 au
i 5.563869108051456 4.8615e-06 deg
node 70.77748264298025 5.1573e-05 deg
peri 34.10095258141565 6.261e-05 deg
M 261.5496946392062 4.0961e-05 deg
tp 2459591.688009277989
(2022-Jan-12.18800928)
0.00016599 TDB
period 1430.444352853761
3.92
1.6658e-05
4.561e-08
d
yr
n .2516700487382076 2.9308e-09 deg/d
Q 2.773916021558818 2.1535e-08 au
  Orbit Determination Parameters
   # obs. used (total)      245  
   data-arc span      6907 days (18.91 yr)  
   first obs. used      2001-11-20  
   last obs. used      2020-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59972  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 02:27:06  

Additional Information
 Earth MOID = 1.21441 au 
 Jupiter MOID = 2.35167 au 
 T_jup = 3.460 
[ 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 16.89   n/a E2021B55  

227400 (2005 UK398)          Discovered 2005-Oct-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

Alternate Designations
 2005 UK398 = 2007 HG15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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