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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5008899289788336 1.665e-06  
a 3.147428906108583 1.0059e-05 au
q 1.570913464861927 9.7686e-06 au
i 13.21060689277056 7.4365e-05 deg
node 107.7973108954322 0.00038753 deg
peri 216.8251573876906 0.0011813 deg
M 175.7841737838318 0.0016841 deg
tp 2458204.614081162688
(2018-Mar-27.11408116)
0.0047697 TDB
period 2039.540437936784
5.58
0.0097777
2.677e-05
d
yr
n .176510351696767 8.462e-07 deg/d
Q 4.723944347355238 1.5098e-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 = .577712 au 
 Jupiter MOID = .814387 au 
 T_jup = 2.964 
[ show covariance matrix ]

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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