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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1833021654362522 4.682e-08  
a 2.361269969437743 1.0015e-08 au
q 1.928444070860212 1.124e-07 au
i 3.72691737211624 4.4549e-06 deg
node 300.9362457951831 7.2328e-05 deg
peri 53.30879346907739 7.3389e-05 deg
M 341.9317981728423 1.6032e-05 deg
tp 2459067.016490153695
(2020-Aug-05.51649015)		 5.9261e-05 TDB
period 1325.30822294324
3.63		 8.4319e-06
2.309e-08		 d
yr
n .2716349251953732 1.7282e-09 deg/d
Q 2.794095868015274 1.1851e-08 au
   Orbit Determination Parameters
   # obs. used (total)      722  
   data-arc span      10522 days (28.81 yr)  
   first obs. used      1991-10-11  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54517  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 04:36:44  

Additional Information
 Earth MOID = .926065 au 
 Jupiter MOID = 2.65095 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 17 CATAB v2.0f-lin.ifort 2020-Aug-25 04:36:50 2020-Aug-25 04:36

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