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109404 (2001 QD181)
Classification: Main-belt Asteroid          SPK-ID: 2109404
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1893159887165738 4.9829e-08  
a 2.576929456806305 1.4942e-08 au
q 2.089075508838156 1.2854e-07 au
i 4.271179952629486 5.5474e-06 deg
node 351.5155681386765 6.1723e-05 deg
peri 315.0577958053764 6.304e-05 deg
M 226.0587948917332 1.7771e-05 deg
tp 2459562.665155162892
(2021-Dec-14.16515516)
7.8169e-05 TDB
period 1510.957406236973
4.14
1.3142e-05
3.598e-08
d
yr
n .2382595290336985 2.0723e-09 deg/d
Q 3.064783404774455 1.7771e-08 au
  Orbit Determination Parameters
   # obs. used (total)      475  
   data-arc span      8235 days (22.55 yr)  
   first obs. used      1997-10-04  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61528  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:04:19  

Additional Information
 Earth MOID = 1.07696 au 
 Jupiter MOID = 2.20228 au 
 T_jup = 3.397 
[ 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 15.6   n/a MPO459511  

109404 (2001 QD181)          Discovered 2001-Aug-27 by NEAT at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 QD181 = 2000 GU170 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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