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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1833021634089756 4.7188e-08  
a 2.361269970641188 1.2207e-08 au
q 1.92844407663001 1.1407e-07 au
i 3.72691702611717 4.5345e-06 deg
node 300.9362496815688 7.3487e-05 deg
peri 53.30879104214112 7.5096e-05 deg
M 341.9317959783636 2.1022e-05 deg
tp 2459067.016498283326
(2020-Aug-05.51649828)
7.7766e-05 TDB
period 1325.308223956425
3.63
1.0277e-05
2.814e-08
d
yr
n .271634924987711 2.1064e-09 deg/d
Q 2.794095864652366 1.4445e-08 au
  Orbit Determination Parameters
   # obs. used (total)      673  
   data-arc span      10124 days (27.72 yr)  
   first obs. used      1991-10-11  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55357  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:17:07  

Additional Information
 Earth MOID = .926065 au 
 Jupiter MOID = 2.65095 au 
 T_jup = 3.525 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456827.5 (2014-Jun-19.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1828572040157292 4.6996e-08  
q 1.930528407584637 1.1352e-07 au
tp 2456417.230377259286
(2013-May-04.73037726)
6.5395e-05 TDB
node 301.0046392459432 7.3475e-05 deg
peri 53.54370083742383 7.5108e-05 deg
i 3.726828965796973 4.5332e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      673  
   data-arc span      10124 days (27.72 yr)  
   first obs. used      1991-10-11  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55357  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:17:07  

Additional Information
 Jupiter MOID = 2.65095 au 
 T_jup = 3.525 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.208625698372036E-15 -5.316662458087829E-15 -4.239464224511815E-14 1.012826980114844E-14 -4.350458502043088E-14 1.327189644686537E-15
q -5.316662458087829E-15 1.288770154520252E-14 4.392991994046195E-13 -2.602658314606506E-14 1.877420561584042E-13 -2.861374602666352E-15
tp -4.239464224511815E-14 4.392991994046195E-13 4.276485277241548E-9 -1.298173755832128E-11 1.042850904973579E-9 1.751665667579315E-12
node 1.012826980114844E-14 -2.602658314606506E-14 -1.298173755832128E-11 5.398570575992929E-9 -5.390198179034946E-9 3.158476167591516E-11
peri -4.350458502043088E-14 1.877420561584042E-13 1.042850904973579E-9 -5.390198179034946E-9 5.641249829152769E-9 -3.111748906774971E-11
i 1.327189644686537E-15 -2.861374602666352E-15 1.751665667579315E-12 3.158476167591516E-11 -3.111748906774971E-11 2.054996098082196E-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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