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442715 (2012 UQ166)
Classification: Mars-crossing Asteroid          SPK-ID: 2442715
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .2466878452468998 8.9938e-08  
a 2.177537253507313 2.7681e-08 au
q 1.640365280494742 2.1068e-07 au
i 7.045841963977565 5.7266e-06 deg
node 262.6597380959429 5.3276e-05 deg
peri 56.53733702388796 5.747e-05 deg
M 179.4267122082608 1.6718e-05 deg
tp 2458415.532933780147
(2018-Oct-24.03293378)
4.8958e-05 TDB
period 1173.672198790095
3.21
2.238e-05
6.127e-08
d
yr
n .3067295965356543 5.8487e-09 deg/d
Q 2.714709226519884 3.451e-08 au
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      6905 days (18.90 yr)  
   first obs. used      1999-09-07  
   last obs. used      2018-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4835  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:52:28  

Additional Information
 Earth MOID = .639946 au 
 Jupiter MOID = 2.61685 au 
 T_jup = 3.634 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457314.5 (2015-Oct-19.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .247261227928187 8.9895e-08  
q 1.638893759745061 2.1062e-07 au
tp 2457242.207186154007
(2015-Aug-07.70718615)
4.4306e-05 TDB
node 262.7082844180263 5.3313e-05 deg
peri 56.54501401477717 5.7476e-05 deg
i 7.043573906553951 5.7258e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      6905 days (18.90 yr)  
   first obs. used      1999-09-07  
   last obs. used      2018-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4835  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:52:28  

Additional Information
 Jupiter MOID = 2.61685 au 
 T_jup = 3.634 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.081191334113181E-15 -1.888483417171494E-14 2.217091734093923E-13 8.308872965375371E-14 -4.405557172749584E-14 -8.075515560328496E-14
q -1.888483417171494E-14 4.436133641609811E-14 -5.29996330838098E-13 -2.015535573405969E-13 1.089523776227613E-13 1.900006394007088E-13
tp 2.217091734093923E-13 -5.29996330838098E-13 1.963014056031216E-9 -5.365068050270173E-11 9.735851853511875E-10 -1.001738000064845E-11
node 8.308872965375371E-14 -2.015535573405969E-13 -5.365068050270173E-11 2.842292733308744E-9 -2.848230730489687E-9 1.176712748955157E-10
peri -4.405557172749584E-14 1.089523776227613E-13 9.735851853511875E-10 -2.848230730489687E-9 3.303539823386889E-9 -1.210868922753077E-10
i -8.075515560328496E-14 1.900006394007088E-13 -1.001738000064845E-11 1.176712748955157E-10 -1.210868922753077E-10 3.278433815492441E-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 17.9   n/a MPO456096  

442715 (2012 UQ166)          Discovered 2009-Oct-26 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

Alternate Designations
 2012 UQ166 = 2009 WV161 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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