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109112 (2001 QR39)
Classification: Main-belt Asteroid          SPK-ID: 2109112
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .00414421052298259 4.1132e-08  
a 2.518259226926018 1.5985e-08 au
q 2.507823030538193 1.0638e-07 au
i 13.22792879017629 5.1894e-06 deg
node 315.7877335136862 2.051e-05 deg
peri 332.2411766166786 0.00067187 deg
M 275.9782247500747 0.00067019 deg
tp 2459341.173561044669
(2021-May-06.67356104)
0.0027171 TDB
period 1459.651163180936
4.00
1.3898e-05
3.805e-08
d
yr
n .2466342706263271 2.3483e-09 deg/d
Q 2.528695423313842 1.6051e-08 au
  Orbit Determination Parameters
   # obs. used (total)      538  
   data-arc span      7351 days (20.13 yr)  
   first obs. used      2000-03-12  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51394  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:01:13  

Additional Information
 Earth MOID = 1.49462 au 
 Jupiter MOID = 2.51205 au 
 T_jup = 3.421 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457050.5 (2015-Jan-28.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .004753783498641434 3.8189e-08  
q 2.506419410429335 9.8728e-08 au
tp 2456355.036625242173
(2013-Mar-03.53662524)
0.0024816 TDB
node 315.8300966867466 2.0489e-05 deg
peri 315.9669420993621 0.00061349 deg
i 13.23496724116015 5.1904e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      538  
   data-arc span      7351 days (20.13 yr)  
   first obs. used      2000-03-12  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51394  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:01:13  

Additional Information
 Jupiter MOID = 2.51205 au 
 T_jup = 3.421 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.458400792165235E-15 -3.721623529667703E-15 1.403606590118365E-11 1.303329436210565E-14 3.49162545679891E-12 4.25810654405267E-15
q -3.721623529667703E-15 9.747254484204507E-15 -3.843928399095141E-11 -3.310939125531026E-14 -9.533923201131113E-12 -1.008307664325774E-14
tp 1.403606590118365E-11 -3.843928399095141E-11 6.158143704595197E-6 -1.19544065688988E-9 1.521587095283914E-6 3.258468097809219E-10
node 1.303329436210565E-14 -3.310939125531026E-14 -1.19544065688988E-9 4.19812932737926E-10 -7.029537762176613E-10 3.505808735169302E-11
peri 3.49162545679891E-12 -9.533923201131113E-12 1.521587095283914E-6 -7.029537762176613E-10 3.763722366037464E-7 4.649844456599572E-11
i 4.25810654405267E-15 -1.008307664325774E-14 3.258468097809219E-10 3.505808735169302E-11 4.649844456599572E-11 2.694052614173585E-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 15.4   n/a MPO432615  

109112 (2001 QR39)          Discovered 2001-Aug-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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