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146421 (2001 QP220)
Classification: Main-belt Asteroid          SPK-ID: 2146421
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 .1087323146950902 5.2355e-08  
a 2.56391953059651 2.7672e-08 au
q 2.285138625342802 1.448e-07 au
i 14.41547702210069 7.8268e-06 deg
node 297.8836529932299 1.8271e-05 deg
peri 309.2583333879001 6.8407e-05 deg
M 273.0132952367321 7.7488e-05 deg
tp 2459362.830915369956
(2021-May-28.33091537)
0.00032735 TDB
period 1499.52949577951
4.11
2.4277e-05
6.647e-08
d
yr
n .2400753042959377 3.8867e-09 deg/d
Q 2.842700435850217 3.0681e-08 au
  Orbit Determination Parameters
   # obs. used (total)      566  
   data-arc span      7243 days (19.83 yr)  
   first obs. used      2000-04-06  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54766  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:37:17  

Additional Information
 Earth MOID = 1.29645 au 
 Jupiter MOID = 2.34266 au 
 T_jup = 3.381 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456964.5 (2014-Nov-03.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1097730890554535 5.2168e-08  
q 2.281614994103525 1.4418e-07 au
tp 2456364.261181184075
(2013-Mar-12.76118118)
0.0002892 TDB
node 297.9503188369336 1.8256e-05 deg
peri 309.2249776947473 6.8018e-05 deg
i 14.42314679423591 7.8303e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      566  
   data-arc span      7243 days (19.83 yr)  
   first obs. used      2000-04-06  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54766  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:37:17  

Additional Information
 Jupiter MOID = 2.34266 au 
 T_jup = 3.381 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.721541518528422E-15 -7.427055175969687E-15 -2.428806416257886E-12 1.14207588231043E-14 -4.461729735573726E-13 1.344559507542445E-14
q -7.427055175969687E-15 2.078739048929091E-14 1.123572938550877E-11 -4.430271864849429E-14 2.283493351018569E-12 -3.759820578930325E-14
tp -2.428806416257886E-12 1.123572938550877E-11 8.363464488450602E-8 -2.400563252794151E-10 1.8953912145882E-8 -4.878024000985176E-11
node 1.14207588231043E-14 -4.430271864849429E-14 -2.400563252794151E-10 3.332981688294465E-10 -3.757982782425806E-10 3.407884995021868E-11
peri -4.461729735573726E-13 2.283493351018569E-12 1.8953912145882E-8 -3.757982782425806E-10 4.626457057820056E-9 -4.32868370424181E-11
i 1.344559507542445E-14 -3.759820578930325E-14 -4.878024000985176E-11 3.407884995021868E-11 -4.32868370424181E-11 6.13138758623706E-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 15.6   n/a MPO359749  

146421 (2001 QP220)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ show close-approach data ]
Alternate Designations
 2001 QP220 = 2004 BN95 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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