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160155 (2001 QP138)
Classification: Main-belt Asteroid          SPK-ID: 2160155
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1608773672510825 3.7737e-08  
a 2.281380162550135 7.8157e-09 au
q 1.914357728300223 8.7468e-08 au
i 7.065593408678536 3.8814e-06 deg
node 235.5609502432869 3.4168e-05 deg
peri 132.8755020887357 3.633e-05 deg
M 162.8329783103758 1.2402e-05 deg
tp 2458431.208389383654
(2018-Nov-08.70838938)
4.2534e-05 TDB
period 1258.620839270279
3.45
6.4678e-06
1.771e-08
d
yr
n .2860273632595501 1.4698e-09 deg/d
Q 2.648402596800047 9.073e-09 au
  Orbit Determination Parameters
   # obs. used (total)      668  
   data-arc span      6735 days (18.44 yr)  
   first obs. used      2001-08-22  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52614  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 13:15:02  

Additional Information
 Earth MOID = .922458 au 
 Jupiter MOID = 2.84453 au 
 T_jup = 3.578 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457062.5 (2015-Feb-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1609324949406847 3.7773e-08  
q 1.914516896820698 8.7563e-08 au
tp 2457170.339012885155
(2015-May-27.83901289)
4.1226e-05 TDB
node 235.6397545243801 3.4229e-05 deg
peri 132.3721550282271 3.6366e-05 deg
i 7.057859001539822 3.8785e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      668  
   data-arc span      6735 days (18.44 yr)  
   first obs. used      2001-08-22  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52614  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 13:15:02  

Additional Information
 Jupiter MOID = 2.84453 au 
 T_jup = 3.578 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.426814650045253E-15 -3.298557456304877E-15 -9.917093795194611E-14 6.305659478410774E-16 -2.859274168734696E-15 -4.392209697327442E-15
q -3.298557456304877E-15 7.667254646631999E-15 2.586758565015165E-13 -5.43112850593802E-16 1.185436880001526E-14 1.024409014367505E-14
tp -9.917093795194611E-14 2.586758565015165E-13 1.699574338132474E-9 5.024374587685468E-12 5.209066286138917E-10 3.089503440950951E-12
node 6.305659478410774E-16 -5.43112850593802E-16 5.024374587685468E-12 1.171640765202165E-9 -1.161008308787984E-9 -7.728913769394145E-12
peri -2.859274168734696E-15 1.185436880001526E-14 5.209066286138917E-10 -1.161008308787984E-9 1.322474034182813E-9 8.579064440689498E-12
i -4.392209697327442E-15 1.024409014367505E-14 3.089503440950951E-12 -7.728913769394145E-12 8.579064440689498E-12 1.504284690971634E-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 16.4   n/a MPO454058  

160155 (2001 QP138)          Discovered 2001-Aug-22 by LINEAR at Socorro
Reference: 20070730/Numbers.arcLast Updated: 2007-08-06

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