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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1831878855311745 4.5122e-08  
a 2.36098675368005 6.8985e-09 au
q 1.928482582506289 1.0682e-07 au
i 3.726949238229154 3.2425e-06 deg
node 300.9361515118325 6.981e-05 deg
peri 53.34042528167768 7.0359e-05 deg
M 36.24412926665233 9.0413e-06 deg
tp 2459067.094442379454
(2020-Aug-05.59444238)
3.3315e-05 TDB
period 1325.069789649617
3.63
5.8075e-06
1.59e-08
d
yr
n .2716838032321252 1.1907e-09 deg/d
Q 2.793490924853809 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48165  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 04:58:38  

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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1840711114703474 4.5105e-08  
q 1.926258294746761 1.0691e-07 au
tp 2457742.897357187788
(2016-Dec-20.39735719)
3.4063e-05 TDB
node 300.9809687657208 6.9877e-05 deg
peri 53.56822967543372 7.042e-05 deg
i 3.725444699203384 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48165  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 04:58:38  

Additional Information
 Jupiter MOID = 2.6522 au 
 T_jup = 3.526 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.034452575570219E-15 -4.815538558204711E-15 5.689563878817233E-13 1.427865191025345E-14 9.54190203017831E-14 -2.670966939872475E-15
q -4.815538558204711E-15 1.143034157128339E-14 -1.392725472047947E-12 -3.388554214244939E-14 -2.393580753154434E-13 6.405366381678465E-15
tp 5.689563878817233E-13 -1.392725472047947E-12 1.160270762912837E-9 7.999723900433792E-12 3.176531955259384E-10 -1.512751268244148E-12
node 1.427865191025345E-14 -3.388554214244939E-14 7.999723900433792E-12 4.882850108226894E-9 -4.870908272158293E-9 4.718255116229743E-11
peri 9.54190203017831E-14 -2.393580753154434E-13 3.176531955259384E-10 -4.870908272158293E-9 4.95900764344914E-9 -4.744723814055527E-11
i -2.670966939872475E-15 6.405366381678465E-15 -1.512751268244148E-12 4.718255116229743E-11 -4.744723814055527E-11 1.050607900192843E-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

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