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541686 (2011 UQ399)
Classification: Main-belt Asteroid          SPK-ID: 2541686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1492041854765404 6.4673e-08  
a 2.38303776965603 1.5013e-08 au
q 2.027478560274671 1.5085e-07 au
i 2.423933252674621 8.3926e-06 deg
node 98.23093526874345 0.00020658 deg
peri 351.4677632078195 0.00020929 deg
M 186.4179190770631 3.3116e-05 deg
tp 2460044.383925779020
(2023-Apr-09.88392578)
0.00012604 TDB
period 1343.6767899101
3.68
1.2697e-05
3.476e-08
d
yr
n .2679215736279005 2.5318e-09 deg/d
Q 2.73859697903739 1.7252e-08 au
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      9564 days (26.18 yr)  
   first obs. used      1994-01-14  
   last obs. used      2020-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62551  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:24:06  

Additional Information
 Earth MOID = 1.04409 au 
 Jupiter MOID = 2.44347 au 
 T_jup = 3.521 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457664.5 (2016-Oct-03.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1488357202012229 6.5118e-08  
q 2.029229745722372 1.522e-07 au
tp 2457358.398317515144
(2015-Dec-01.89831751)
0.00011841 TDB
node 98.25085994946384 0.00020668 deg
peri 351.8576401576105 0.00020939 deg
i 2.423576198086923 8.3892e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      9564 days (26.18 yr)  
   first obs. used      1994-01-14  
   last obs. used      2020-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62551  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:24:06  

Additional Information
 Jupiter MOID = 2.44347 au 
 T_jup = 3.521 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.240346064465928E-15 -9.878710314559392E-15 3.789649815224985E-12 -3.27064117552706E-14 1.042752850598081E-12 -2.305391243890632E-15
q -9.878710314559392E-15 2.316551131372699E-14 -8.763295717537673E-12 7.653640346832103E-14 -2.405503144353859E-12 5.302342859243373E-15
tp 3.789649815224985E-12 -8.763295717537673E-12 1.401984460830486E-8 -6.911903262227539E-11 4.057835894102206E-9 -5.557486913854661E-12
node -3.27064117552706E-14 7.653640346832103E-14 -6.911903262227539E-11 4.271831492213694E-8 -4.269964648609656E-8 9.83937335565859E-10
peri 1.042752850598081E-12 -2.405503144353859E-12 4.057835894102206E-9 -4.269964648609656E-8 4.384342273730999E-8 -9.846066845746145E-10
i -2.305391243890632E-15 5.302342859243373E-15 -5.557486913854661E-12 9.83937335565859E-10 -9.846066845746145E-10 7.037913394746807E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.37   .3061 E2021B25 autocmod 2.8

541686 (2011 UQ399)          Discovered 1994-Jan-14 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-12-13

Alternate Designations
 2011 UQ399 = 1994 AC15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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