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160549 (1998 QP20)
Classification: Main-belt Asteroid          SPK-ID: 2160549
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2950358328392683 3.5975e-08  
a 2.741747570131546 1.4596e-08 au
q 1.932833792342745 9.6905e-08 au
i 4.252931374795865 4.7141e-06 deg
node 305.7473556337189 6.0674e-05 deg
peri 118.9063270217777 6.1573e-05 deg
M 232.1233347871343 1.0838e-05 deg
tp 2459589.517813357584
(2022-Jan-10.01781336)
5.3571e-05 TDB
period 1658.210373689009
4.54
1.3242e-05
3.625e-08
d
yr
n .217101524458028 1.7337e-09 deg/d
Q 3.550661347920346 1.8903e-08 au
  Orbit Determination Parameters
   # obs. used (total)      801  
   data-arc span      7594 days (20.79 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53741  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 13:21:43  

Additional Information
 Earth MOID = .9507 au 
 Jupiter MOID = 1.81082 au 
 T_jup = 3.281 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456791.5 (2014-May-14.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2992855231862974 3.6066e-08  
q 1.915314850070042 9.7055e-08 au
tp 2456282.207380263955
(2012-Dec-20.70738026)
3.6218e-05 TDB
node 305.9418454876123 6.0987e-05 deg
peri 118.5943699787151 6.182e-05 deg
i 4.248049789283767 4.7088e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      801  
   data-arc span      7594 days (20.79 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53741  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 13:21:43  

Additional Information
 Jupiter MOID = 1.81082 au 
 T_jup = 3.281 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.300778198189561E-15 -3.483152943245851E-15 -1.07280248584203E-13 -1.372919333225443E-14 -3.541276155299026E-14 -3.590444919372687E-15
q -3.483152943245851E-15 9.41970227861729E-15 4.279350856069999E-13 3.886762086478901E-14 1.392519530126851E-13 1.013557349978528E-14
tp -1.07280248584203E-13 4.279350856069999E-13 1.311774173233667E-9 3.940364469963911E-12 3.854235932677602E-10 1.08313755819876E-12
node -1.372919333225443E-14 3.886762086478901E-14 3.940364469963911E-12 3.719402359975757E-9 -3.70686484575423E-9 4.782471209325894E-11
peri -3.541276155299026E-14 1.392519530126851E-13 3.854235932677602E-10 -3.70686484575423E-9 3.821663976562965E-9 -4.721553467779622E-11
i -3.590444919372687E-15 1.013557349978528E-14 1.08313755819876E-12 4.782471209325894E-11 -4.721553467779622E-11 2.217287079432472E-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 14.9   n/a MPO439950  

160549 (1998 QP20)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

[ show close-approach data ]
Alternate Designations
 1998 QP20 = 2000 DN53 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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