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46851 (1998 QN39)
Classification: Main-belt Asteroid          SPK-ID: 2046851
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .196770330179228 4.2947e-08  
a 2.464689500743539 9.4581e-09 au
q 1.979711733892956 1.0783e-07 au
i 2.773250524887601 4.3344e-06 deg
node 49.64848507940338 8.4011e-05 deg
peri 278.9672394739277 8.4933e-05 deg
M 330.5174747650593 1.6151e-05 deg
tp 2459512.245449967968
(2021-Oct-24.74544997)
6.3807e-05 TDB
period 1413.324050651063
3.87
8.1353e-06
2.227e-08
d
yr
n .2547186541077837 1.4662e-09 deg/d
Q 2.949667267594122 1.1319e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1032  
   data-arc span      8410 days (23.03 yr)  
   first obs. used      1998-07-31  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5729  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 00:53:30  

Additional Information
 Earth MOID = .970117 au 
 Jupiter MOID = 2.40213 au 
 T_jup = 3.459 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456236.5 (2012-Nov-05.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1973696748744752 4.3108e-08  
q 1.977874654638478 1.0827e-07 au
tp 2456682.660908181972
(2014-Jan-25.16090818)
5.4531e-05 TDB
node 49.758200578018 8.4081e-05 deg
peri 278.3544561223662 8.4984e-05 deg
i 2.773175743798848 4.3305e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1032  
   data-arc span      8410 days (23.03 yr)  
   first obs. used      1998-07-31  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5729  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 00:53:30  

Additional Information
 Jupiter MOID = 2.40213 au 
 T_jup = 3.459 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.8583398196482E-15 -4.655852234101625E-15 6.308342410419601E-13 -5.733707160503084E-15 1.043759631816177E-13 6.011361970758671E-16
q -4.655852234101625E-15 1.17226615267623E-14 -1.374127195273674E-12 1.445765417484061E-14 -2.204122599229852E-13 -1.410776532737014E-15
tp 6.308342410419601E-13 -1.374127195273674E-12 2.973679409702248E-9 -1.192436015609721E-11 6.876390288860195E-10 4.120757668717117E-13
node -5.733707160503084E-15 1.445765417484061E-14 -1.192436015609721E-11 7.069614838068886E-9 -7.063630325266095E-9 -6.177360899682573E-11
peri 1.043759631816177E-13 -2.204122599229852E-13 6.876390288860195E-10 -7.063630325266095E-9 7.222362413571594E-9 6.177085621696496E-11
i 6.011361970758671E-16 -1.410776532737014E-15 4.120757668717117E-13 -6.177360899682573E-11 6.177085621696496E-11 1.875313845666029E-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 15.37   n/a MPO636727  

46851 (1998 QN39)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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