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48949 (1998 QR16)
Classification: Main-belt Asteroid          SPK-ID: 2048949
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1831878848085519 4.5122e-08  
a 2.360986749138161 6.8985e-09 au
q 1.928482580502522 1.0682e-07 au
i 3.726949252272044 3.2425e-06 deg
node 300.9361520388999 6.981e-05 deg
peri 53.34042625621439 7.0359e-05 deg
M 36.24412840179291 9.0413e-06 deg
tp 2459067.094445947738
(2020-Aug-05.59444595)
3.3315e-05 TDB
period 1325.069785826013
3.63
5.8075e-06
1.59e-08
d
yr
n .2716838040160924 1.1907e-09 deg/d
Q 2.7934909177738 8.1622e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1094  
   data-arc span      10688 days (29.26 yr)  
   first obs. used      1991-10-11  
   last obs. used      2021-01-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48154  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:13:04  

Additional Information
 Earth MOID = .924402 au 
 Jupiter MOID = 2.6522 au 
 T_jup = 3.526 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457568.5 (2016-Jun-29.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1840711108159879 4.5105e-08  
q 1.926258292753726 1.0691e-07 au
tp 2457742.897363616734
(2016-Dec-20.39736362)
3.4063e-05 TDB
node 300.9809690765412 6.9877e-05 deg
peri 53.56823072647813 7.042e-05 deg
i 3.725444707508296 3.2413e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1094  
   data-arc span      10688 days (29.26 yr)  
   first obs. used      1991-10-11  
   last obs. used      2021-01-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48154  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:13:04  

Additional Information
 Jupiter MOID = 2.6522 au 
 T_jup = 3.526 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.034452614739785E-15 -4.81553800833619E-15 5.689549635282251E-13 1.427867645423245E-14 9.5418682278729E-14 -2.670966606283522E-15
q -4.81553800833619E-15 1.143033847869404E-14 -1.392721557201591E-12 -3.388556608152057E-14 -2.393572359282429E-13 6.405357867279325E-15
tp 5.689549635282251E-13 -1.392721557201591E-12 1.160269128275369E-9 7.999633020588427E-12 3.176530809157252E-10 -1.512734256669547E-12
node 1.427867645423245E-14 -3.388556608152057E-14 7.999633020588427E-12 4.882850012070626E-9 -4.870908200755339E-9 4.718254159076469E-11
peri 9.5418682278729E-14 -2.393572359282429E-13 3.176530809157252E-10 -4.870908200755339E-9 4.959007584142479E-9 -4.744722476838862E-11
i -2.670966606283522E-15 6.405357867279325E-15 -1.512734256669547E-12 4.718254159076469E-11 -4.744722476838862E-11 1.050607894281766E-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 15.77   n/a E2021B10  

48949 (1998 QR16)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 QR16 = 2000 CT20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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