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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 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1966-Sep-24 11:58 < 00:01 Europ 0.0379830085025313 0.0379792242833861 0.0379867981853572 7.37046520708969 7.37046516912434 2439392.998267561 0.473200776664416 797.262977007046 70.7035889614178 -77.2642426883563 78387.3835859761 T 15 CATAB v2.0f-lin.ifort 2020-Feb-24 08:37:22 2020-Feb-24 08:37

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