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78424 (2002 QB42)
Classification: Main-belt Asteroid          SPK-ID: 2078424
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03319523828358687 5.6509e-08  
a 2.761530060420446 1.9806e-08 au
q 2.669860412037502 1.6403e-07 au
i 5.141370543938126 6.6281e-06 deg
node 7.63087391911286 5.7258e-05 deg
peri 307.6355907792108 0.00010717 deg
M 322.2624411383487 8.9722e-05 deg
tp 2459176.209155782013
(2020-Nov-22.70915578)		 0.0004177 TDB
period 1676.189398297415
4.59		 1.8032e-05
4.937e-08		 d
yr
n .2147728653848241 2.3105e-09 deg/d
Q 2.853199708803392 2.0463e-08 au
   Orbit Determination Parameters
   # obs. used (total)      666  
   data-arc span      8860 days (24.26 yr)  
   first obs. used      1996-03-27  
   last obs. used      2020-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59253  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:56  

Additional Information
 Earth MOID = 1.66036 au 
 Jupiter MOID = 2.23934 au 
 T_jup = 3.335 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456575.5 (2013-Oct-10.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03111088045674588 5.7069e-08  
q 2.675536208818974 1.6517e-07 au
tp 2455838.577314956905
(2011-Oct-04.07731496)		 0.00044414 TDB
node 7.731604772717392 5.7264e-05 deg
peri 310.1672479205319 0.00011144 deg
i 5.141285859735578 6.6269e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      666  
   data-arc span      8860 days (24.26 yr)  
   first obs. used      1996-03-27  
   last obs. used      2020-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59253  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:56  

Additional Information
 Jupiter MOID = 2.23934 au 
 T_jup = 3.335 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.256843076155517E-15 -9.369057117284001E-15 6.76276166224089E-12 -1.232969070893431E-14 1.482155777037698E-12 -3.139288338333725E-15
q -9.369057117284001E-15 2.728252166479153E-14 -1.973189144577342E-11 3.319774869772706E-14 -4.295740423720294E-12 8.877411011308928E-15
tp 6.76276166224089E-12 -1.973189144577342E-11 1.972601723865766E-7 -6.714954815035537E-11 4.248212762234138E-8 -1.645473811740688E-12
node -1.232969070893431E-14 3.319774869772706E-14 -6.714954815035537E-11 3.279118452766702E-9 -3.280024917901649E-9 -1.782234550922291E-11
peri 1.482155777037698E-12 -4.295740423720294E-12 4.248212762234138E-8 -3.280024917901649E-9 1.241981713686038E-8 1.744017039127444E-11
i -3.139288338333725E-15 8.877411011308928E-15 -1.645473811740688E-12 -1.782234550922291E-11 1.744017039127444E-11 4.391621208911727E-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 15.09   n/a E2020-QM9  
diameter diameter 4.456 km 0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.107   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78424 (2002 QB42)          Discovered 2002-Aug-29 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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