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193914 (2001 QA261)
Classification: Main-belt Asteroid          SPK-ID: 2193914
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1410057210307576 6.0275e-08  
a 2.251060385403802 9.4095e-09 au
q 1.933647992676164 1.3504e-07 au
i 6.13891016308541 5.1853e-06 deg
node 308.7693583817038 5.5005e-05 deg
peri 42.63788892355511 5.7482e-05 deg
M 199.6943486698993 1.7906e-05 deg
tp 2459549.820082964922
(2021-Dec-01.32008296)
6.3048e-05 TDB
period 1233.613588956731
3.38
7.7349e-06
2.118e-08
d
yr
n .2918255791138394 1.8298e-09 deg/d
Q 2.56847277813144 1.0736e-08 au
  Orbit Determination Parameters
   # obs. used (total)      342  
   data-arc span      7218 days (19.76 yr)  
   first obs. used      2000-04-27  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6214  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 22:11:51  

Additional Information
 Earth MOID = .932239 au 
 Jupiter MOID = 2.84177 au 
 T_jup = 3.606 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457250.5 (2015-Aug-16.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1411328763806989 6.0388e-08  
q 1.933398371706951 1.3535e-07 au
tp 2457080.483523174668
(2015-Feb-26.98352317)
5.6466e-05 TDB
node 308.8652252547579 5.4936e-05 deg
peri 42.13730461873647 5.7405e-05 deg
i 6.143006362683765 5.1899e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      342  
   data-arc span      7218 days (19.76 yr)  
   first obs. used      2000-04-27  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6214  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 22:11:51  

Additional Information
 Jupiter MOID = 2.84177 au 
 T_jup = 3.606 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.646657716116415E-15 -8.158744680477165E-15 7.610242810398616E-13 3.171016224695626E-14 1.267175522561695E-13 -5.699073147171319E-15
q -8.158744680477165E-15 1.831843670582334E-14 -1.572454019646908E-12 -7.09761015353413E-14 -2.473249119919626E-13 1.283289805400123E-14
tp 7.610242810398616E-13 -1.572454019646908E-12 3.188363822918462E-9 -1.250751190295399E-11 9.718028463599524E-10 -4.137149990222816E-12
node 3.171016224695626E-14 -7.09761015353413E-14 -1.250751190295399E-11 3.017997371859606E-9 -3.004521755757802E-9 1.03082936375579E-10
peri 1.267175522561695E-13 -2.473249119919626E-13 9.718028463599524E-10 -3.004521755757802E-9 3.295355632073214E-9 -1.036178654918732E-10
i -5.699073147171319E-15 1.283289805400123E-14 -4.137149990222816E-12 1.03082936375579E-10 -1.036178654918732E-10 2.693467058649018E-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 16.6   n/a MPO449957  

193914 (2001 QA261)          Discovered 2001-Aug-25 by LINEAR at Socorro
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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