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455217 (2001 QD154)
Classification: Mars-crossing Asteroid          SPK-ID: 2455217
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3838442320014581 5.4876e-08  
a 2.248051095513278 7.9883e-09 au
q 1.385149649255947 1.2081e-07 au
i 7.669657370485788 4.4143e-06 deg
node 167.2278589534724 3.7161e-05 deg
peri 253.3019063942513 3.9597e-05 deg
M 161.7641523331829 5.5013e-06 deg
tp 2458447.293238693472
(2018-Nov-24.79323869)
2.0075e-05 TDB
period 1231.140714415855
3.37
6.5622e-06
1.797e-08
d
yr
n .2924117412287928 1.5586e-09 deg/d
Q 3.110952541770609 1.1055e-08 au
  Orbit Determination Parameters
   # obs. used (total)      350  
   data-arc span      6849 days (18.75 yr)  
   first obs. used      2001-08-20  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43116  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 06:11:35  

Additional Information
 Earth MOID = .4242 au 
 Jupiter MOID = 2.29947 au 
 T_jup = 3.518 
[ 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 17.7   n/a MPO472502  

455217 (2001 QD154)          Discovered 2001-Aug-28 by Wolf, M., Sarounova, L. at Ondrejov
Reference: Last Updated: 2016-02-25

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