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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1839835407103006 5.0183e-08  
a 2.360993366654454 1.2138e-08 au
q 1.926609447463834 1.2054e-07 au
i 3.725555937033939 5.1775e-06 deg
node 300.9612066832474 7.4593e-05 deg
peri 53.39768247896492 7.6225e-05 deg
M 233.232936839672 2.0505e-05 deg
tp 2459067.099754024230
(2020-Aug-05.59975402)		 7.7999e-05 TDB
period 1325.075356808385
3.63		 1.0219e-05
2.798e-08		 d
yr
n .2716826617824261 2.0951e-09 deg/d
Q 2.795377285845073 1.4371e-08 au
   Orbit Determination Parameters
   # obs. used (total)      646  
   data-arc span      10073 days (27.58 yr)  
   first obs. used      1991-10-11  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56184  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:39:36  

Additional Information
 Earth MOID = .923369 au 
 Jupiter MOID = 2.64665 au 
 T_jup = 3.525 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456575.5 (2013-Oct-10.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1824802584748385 4.9975e-08  
q 1.930530723138683 1.1974e-07 au
tp 2456416.763796609703
(2013-May-04.26379661)		 6.5866e-05 TDB
node 301.0084870926101 7.4544e-05 deg
peri 53.40413069934674 7.6216e-05 deg
i 3.726475849371119 5.1764e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      646  
   data-arc span      10073 days (27.58 yr)  
   first obs. used      1991-10-11  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56184  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:39:36  

Additional Information
 Jupiter MOID = 2.64665 au 
 T_jup = 3.525 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.497494950997034E-15 -5.963916010226532E-15 -8.530813253808602E-14 8.434353885079154E-15 -7.67139343897066E-14 1.098674608803861E-15
q -5.963916010226532E-15 1.433764787700334E-14 5.453878480658605E-13 -2.197896193253406E-14 2.653216152218468E-13 -2.363348649685163E-15
tp -8.530813253808602E-14 5.453878480658605E-13 4.338311116985184E-9 -1.656578566665821E-11 1.066875593789999E-9 8.821900005512241E-13
node 8.434353885079154E-15 -2.197896193253406E-14 -1.656578566665821E-11 5.556778389197224E-9 -5.548784357050359E-9 5.774561325315815E-11
peri -7.67139343897066E-14 2.653216152218468E-13 1.066875593789999E-9 -5.548784357050359E-9 5.808855280913953E-9 -5.742370814086363E-11
i 1.098674608803861E-15 -2.363348649685163E-15 8.821900005512241E-13 5.774561325315815E-11 -5.742370814086363E-11 2.679556061402641E-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 15.7   n/a MPO290802  

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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