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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 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2141-Apr-14 07:49 00:06 Eunom 0.0136190776200279 0.013603877690065 0.0136342862662661 2.90524956431792 2.90524920953494 2503147.825913230 5.94494322859772 931.155787336562 28.0340462855239 -35.6625422976421 42320.833517411 T 15 CATAB v2.0e-lin.ifort 2019-May-30 04:39:40 2019-May-30 04:39

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