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312870 (2011 UA161)
Classification: Main-belt Asteroid          SPK-ID: 2312870
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05008108616951221 7.1769e-08  
a 2.871179365382813 3.5297e-08 au
q 2.727387584176951 2.2895e-07 au
i 11.10773482836869 5.2213e-06 deg
node 244.7140668880949 2.8499e-05 deg
peri 163.7203178008839 6.4154e-05 deg
M .8744837450016831 5.8204e-05 deg
tp 2459392.183436307239
(2021-Jun-26.68343631)
0.00028728 TDB
period 1777.006077329733
4.87
3.2768e-05
8.971e-08
d
yr
n .2025879396771473 3.7357e-09 deg/d
Q 3.014971146588675 3.7064e-08 au
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      6967 days (19.07 yr)  
   first obs. used      2001-10-20  
   last obs. used      2020-11-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57553  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:31:40  

Additional Information
 Earth MOID = 1.73959 au 
 Jupiter MOID = 2.27916 au 
 T_jup = 3.268 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458032.5 (2017-Oct-06.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05215993397003984 7.2364e-08  
q 2.721439062448219 2.3136e-07 au
tp 2457597.749386140529
(2016-Jul-28.24938614)
0.00026343 TDB
node 244.7793481154057 2.845e-05 deg
peri 160.4892833095468 6.141e-05 deg
i 11.11709951066008 5.2272e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      6967 days (19.07 yr)  
   first obs. used      2001-10-20  
   last obs. used      2020-11-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57553  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:31:40  

Additional Information
 Jupiter MOID = 2.27916 au 
 T_jup = 3.268 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.236591915937245E-15 -1.663810387080743E-14 -1.161425790538523E-12 -3.029094941808781E-14 -4.282986795323142E-14 -1.348042816473962E-14
q -1.663810387080743E-14 5.352948017819344E-14 4.481420805879962E-12 9.65918825203121E-14 3.284020917673914E-13 4.58959617513315E-14
tp -1.161425790538523E-12 4.481420805879962E-12 6.939570981525698E-8 2.352951843009553E-11 1.43547382229168E-8 5.397853175533851E-11
node -3.029094941808781E-14 9.65918825203121E-14 2.352951843009553E-11 8.094264373924504E-10 -7.899671052011763E-10 -8.258768314112552E-12
peri -4.282986795323142E-14 3.284020917673914E-13 1.43547382229168E-8 -7.899671052011763E-10 3.771194645032685E-9 1.891210752802689E-11
i -1.348042816473962E-14 4.58959617513315E-14 5.397853175533851E-11 -8.258768314112552E-12 1.891210752802689E-11 2.732316966791504E-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 16.52   n/a E2021B25  

312870 (2011 UA161)          Discovered 2001-Oct-20 by NEAT at Palomar
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2011 UA161 = 2010 JJ86 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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