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(2012 UK171)
Classification: Aten [NEO]          SPK-ID: 3615463
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2217075195983908 3.6513e-08  
a .8597349927782755 2.1672e-09 au
q .6691252800174635 3.2523e-08 au
i 1.318849200397369 1.6709e-06 deg
node 250.4318577052469 3.0808e-05 deg
peri 357.9227998213566 3.4035e-05 deg
M 89.36500082685362 1.0268e-05 deg
tp 2459324.221306230181
(2021-Apr-19.72130623)
8.3269e-06 TDB
period 291.1691323938966
0.80
1.1009e-06
3.014e-09
d
yr
n 1.236394795836353 4.6749e-09 deg/d
Q 1.050344705539087 2.6476e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -4.799509387034876E-14 6.719E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      275  
   data-arc span      3002 days (8.22 yr)  
   first obs. used      2012-10-25  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41662  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 07:06:33  

Additional Information
 Earth MOID = .0139818 au 
 Jupiter MOID = 3.95707 au 
 T_jup = 6.845 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458153.5 (2018-Feb-04.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2219904174668522 3.6192e-08  
q .6685038726837309 3.1692e-08 au
tp 2458160.782225736860
(2018-Feb-11.28222574)
8.5848e-06 TDB
node 250.8360088949031 3.041e-05 deg
peri 357.8440131466589 3.3598e-05 deg
i 1.331226708335885 1.6719e-06 deg

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -4.799509387034876E-14 6.719E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      275  
   data-arc span      3002 days (8.22 yr)  
   first obs. used      2012-10-25  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41662  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 07:06:33  

Additional Information
 Jupiter MOID = 3.95707 au 
 T_jup = 6.845 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
Orbit Covariance (7×7)
  e q tp node peri i A2
e 1.309839276270006E-15 -1.146817724916353E-15 2.575079722067745E-14 1.263168049129842E-13 -1.027581454151398E-13 3.646565213637355E-14 -2.82482480050662E-23
q -1.146817724916353E-15 1.004377696941247E-15 -2.422303941687446E-14 -1.109261247524845E-13 8.930114033897078E-14 -3.174581152905657E-14 2.770632907321671E-23
tp 2.575079722067745E-14 -2.422303941687446E-14 7.369851989639109E-11 -1.001739507661099E-10 1.569789986087263E-10 -1.448923702829538E-12 -6.802609028712864E-21
node 1.263168049129842E-13 -1.109261247524845E-13 -1.001739507661099E-10 9.24746371145718E-10 -1.004106951440119E-9 1.325747244270146E-12 -3.796465479270925E-20
peri -1.027581454151398E-13 8.930114033897078E-14 1.569789986087263E-10 -1.004106951440119E-9 1.128811017849044E-9 -2.538505474440664E-12 3.884423842865628E-20
i 3.646565213637355E-14 -3.174581152905657E-14 -1.448923702829538E-12 1.325747244270146E-12 -2.538505474440664E-12 2.795115946094054E-12 -9.843517367997024E-22
A2 -2.82482480050662E-23 2.770632907321671E-23 -6.802609028712864E-21 -3.796465479270925E-20 3.884423842865628E-20 -9.843517367997024E-22 4.514822030855995E-29

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 24.44   n/a MPO599396  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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