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245501 (2005 QC157)
Classification: Main-belt Asteroid          SPK-ID: 2245501
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2635256679167444 5.1789e-08  
a 3.083113941874484 3.3404e-08 au
q 2.270634281078584 1.7634e-07 au
i 13.14813425198774 7.6692e-06 deg
node 196.2086212989738 2.159e-05 deg
peri 115.5476330528697 2.8902e-05 deg
M 290.3699026550354 2.1092e-05 deg
tp 2459382.952312420174
(2021-Jun-17.45231242)
0.00012065 TDB
period 1977.346545835606
5.41
3.2136e-05
8.798e-08
d
yr
n .1820621684945305 2.9589e-09 deg/d
Q 3.895593602670384 4.2207e-08 au
  Orbit Determination Parameters
   # obs. used (total)      377  
   data-arc span      8114 days (22.21 yr)  
   first obs. used      1998-03-23  
   last obs. used      2020-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48222  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:43:48  

Additional Information
 Earth MOID = 1.29406 au 
 Jupiter MOID = 1.73804 au 
 T_jup = 3.134 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457296.5 (2015-Oct-01.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2622116785398321 5.1808e-08  
q 2.276498998684961 1.7643e-07 au
tp 2457404.713620602524
(2016-Jan-17.21362060)
9.8387e-05 TDB
node 196.2308767601689 2.1588e-05 deg
peri 115.6051202513488 2.8968e-05 deg
i 13.1437912039813 7.6674e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      377  
   data-arc span      8114 days (22.21 yr)  
   first obs. used      1998-03-23  
   last obs. used      2020-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48222  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:43:48  

Additional Information
 Jupiter MOID = 1.73804 au 
 T_jup = 3.134 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.684074071781045E-15 -9.086991343275563E-15 -1.554449600236701E-12 1.251588235477012E-14 -1.370044125546792E-13 -1.535505081477358E-14
q -9.086991343275563E-15 3.112789089962408E-14 6.326868559196247E-12 -4.29320383705356E-14 6.723554567323136E-13 6.121556934604734E-14
tp -1.554449600236701E-12 6.326868559196247E-12 9.680047012147906E-9 -3.254278342256192E-11 1.899878472358505E-9 5.839583517982112E-11
node 1.251588235477012E-14 -4.29320383705356E-14 -3.254278342256192E-11 4.660387446769537E-10 -4.588280577169535E-10 7.772242817540759E-11
peri -1.370044125546792E-13 6.723554567323136E-13 1.899878472358505E-9 -4.588280577169535E-10 8.391472124630331E-10 -6.479412868644659E-11
i -1.535505081477358E-14 6.121556934604734E-14 5.839583517982112E-11 7.772242817540759E-11 -6.479412868644659E-11 5.878944308541205E-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 15.5   n/a MPO470617  
diameter diameter 3.095 km 0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.106   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

245501 (2005 QC157)          Discovered 2005-Aug-30 by NEAT at Palomar
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

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