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(2001 QL169)
Classification: Mars-crossing Asteroid          SPK-ID: 3102859
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .500981572530161 1.6704e-06  
a 3.147161052824667 1.0082e-05 au
q 1.570491359574888 9.7978e-06 au
i 13.20946136697328 7.4373e-05 deg
node 107.7926787042759 0.00038773 deg
peri 216.8460949094197 0.0011815 deg
M 210.3420765855969 0.0018505 deg
tp 2460244.262287272257
(2023-Oct-26.76228727)
0.014555 TDB
period 2039.280089253467
5.58
0.0097993
2.683e-05
d
yr
n .1765328862362343 8.4829e-07 deg/d
Q 4.723830746074445 1.5133e-05 au
  Orbit Determination Parameters
   # obs. used (total)      59  
   data-arc span      4089 days (11.20 yr)  
   first obs. used      2001-08-03  
   last obs. used      2012-10-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .64184  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 21:08:06  

Additional Information
 Earth MOID = .57859 au 
 Jupiter MOID = .814431 au 
 T_jup = 2.964 
[ hide covariance matrix ]
Orbital Elements at Epoch 2453118.5 (2004-Apr-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5043521110799825 2.4321e-06  
q 1.544429401388144 7.5519e-06 au
tp 2454116.950969364084
(2007-Jan-16.45096936)
0.001187 TDB
node 111.9184136218588 0.00027604 deg
peri 210.6558126769139 0.0011424 deg
i 14.38225223610794 6.5331e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      59  
   data-arc span      4089 days (11.20 yr)  
   first obs. used      2001-08-03  
   last obs. used      2012-10-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .64184  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 21:08:06  

Additional Information
 Jupiter MOID = .814431 au 
 T_jup = 2.964 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.915162319308502E-12 -1.836696282956013E-11 -2.455552398366172E-9 2.86782417776611E-10 -2.456867866980509E-9 -5.02515981255863E-11
q -1.836696282956013E-11 5.70318657619122E-11 7.60429867737545E-9 -8.871738776384708E-10 7.612460390424407E-9 1.574620497991501E-10
tp -2.455552398366172E-9 7.60429867737545E-9 1.409007440823448E-6 -1.736261634638935E-7 1.320834502828875E-6 -4.099419736279509E-9
node 2.86782417776611E-10 -8.871738776384708E-10 -1.736261634638935E-7 7.619871618758472E-8 -2.14562504936394E-7 1.147820409017953E-8
peri -2.456867866980509E-9 7.612460390424407E-9 1.320834502828875E-6 -2.14562504936394E-7 1.305095994677121E-6 -8.588802822014855E-9
i -5.02515981255863E-11 1.574620497991501E-10 -4.099419736279509E-9 1.147820409017953E-8 -8.588802822014855E-9 4.268200814247351E-9

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.8   n/a MPO241841  
diameter diameter 0.72 km 0.1 Fernandez et al. (2005) Astron.J. 130:308-318  
geometric albedo albedo 0.107   0.033 Fernandez et al. (2005) Astron.J. 130:308-318  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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