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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 
[ 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 15.77   n/a E2021B10  

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 20 CATAB v2.0f-lin.ifort 2021-Feb-24 04:58:40 2021-Feb-24 04:58

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