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JPL Small-Body Database Browser
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146440 (2001 QH284)
Classification: Main-belt Asteroid          SPK-ID: 2146440
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08615708797872354 5.5962e-08  
a 2.655385176229733 1.8194e-08 au
q 2.42660492198391 1.5292e-07 au
i 1.842581644380685 6.3473e-06 deg
node 182.8280938329368 0.0001259 deg
peri 145.4768849920064 0.00012915 deg
M 44.23569084028253 2.7479e-05 deg
tp 2458406.295168632935
(2018-Oct-14.79516863)
0.00012044 TDB
period 1580.482591411852
4.33
1.6244e-05
4.447e-08
d
yr
n .227778529137996 2.341e-09 deg/d
Q 2.884165430475556 1.9762e-08 au
  Orbit Determination Parameters
   # obs. used (total)      351  
   data-arc span      6684 days (18.30 yr)  
   first obs. used      2001-08-18  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56097  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 11:36:26  

Additional Information
 Earth MOID = 1.41458 au 
 Jupiter MOID = 2.37382 au 
 T_jup = 3.382 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456746.5 (2014-Mar-30.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08812730813153907 5.6192e-08  
q 2.421397353474998 1.5388e-07 au
tp 2456822.538260209408
(2014-Jun-14.03826021)
0.00011668 TDB
node 182.8425906733071 0.00012603 deg
peri 144.8046111667322 0.00012911 deg
i 1.840004952588491 6.3518e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      351  
   data-arc span      6684 days (18.30 yr)  
   first obs. used      2001-08-18  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56097  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 11:36:26  

Additional Information
 Jupiter MOID = 2.37382 au 
 T_jup = 3.382 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.157573846738696E-15 -8.598224693048692E-15 2.166961697872311E-12 -1.604098295346448E-14 4.903396886704997E-13 -1.784011941267559E-15
q -8.598224693048692E-15 2.367864835004611E-14 -5.848224996553919E-12 4.418765906522451E-14 -1.325282862525025E-12 4.958844683437782E-15
tp 2.166961697872311E-12 -5.848224996553919E-12 1.361385372558993E-8 -6.89340881384924E-12 3.282358574352998E-9 -2.182076462402994E-12
node -1.604098295346448E-14 4.418765906522451E-14 -6.89340881384924E-12 1.588276032568602E-8 -1.587551091129479E-8 -1.237118470606135E-10
peri 4.903396886704997E-13 -1.325282862525025E-12 3.282358574352998E-9 -1.587551091129479E-8 1.666888897503614E-8 1.231543976191544E-10
i -1.784011941267559E-15 4.958844683437782E-15 -2.182076462402994E-12 -1.237118470606135E-10 1.231543976191544E-10 4.034477023631612E-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 16.3   n/a MPO453929  

146440 (2001 QH284)          Discovered 2001-Aug-18 by NEAT at Palomar
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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