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161921 (2007 EX56)
Classification: Main-belt Asteroid          SPK-ID: 2161921
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1132548851224617 3.5696e-08  
a 2.334608839932708 1.4042e-08 au
q 2.070202983960245 8.3418e-08 au
i 7.735185647592523 4.1053e-06 deg
node 98.14777694223893 3.5591e-05 deg
peri 167.6719527714343 4.3859e-05 deg
M 282.5223140016781 2.8411e-05 deg
tp 2459676.910166872515
(2022-Apr-07.41016687)
0.00010417 TDB
period 1302.92559429681
3.57
1.1755e-05
3.218e-08
d
yr
n .2763012727478827 2.4927e-09 deg/d
Q 2.599014695905171 1.5632e-08 au
  Orbit Determination Parameters
   # obs. used (total)      552  
   data-arc span      7725 days (21.15 yr)  
   first obs. used      2000-03-11  
   last obs. used      2021-05-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55357  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:04:50  

Additional Information
 Earth MOID = 1.05484 au 
 Jupiter MOID = 2.47117 au 
 T_jup = 3.548 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.43   n/a MPCxxxxx  

161921 (2007 EX56)          Discovered 2007-Mar-14 by Lowe, A. at Mayhill
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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