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213440 (2001 YE121)
Classification: Main-belt Asteroid          SPK-ID: 2213440
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05920458382060959 5.8065e-08  
a 3.062583988977761 4.0386e-08 au
q 2.88126497849467 1.7702e-07 au
i 16.78656737189042 7.154e-06 deg
node 60.1055591960801 2.1308e-05 deg
peri 28.60605477292215 7.5444e-05 deg
M 190.290886619063 7.7148e-05 deg
tp 2460123.354219491224
(2023-Jun-27.85421949)
0.00043196 TDB
period 1957.629218597751
5.36
3.8723e-05
1.06e-07
d
yr
n .1838959066303004 3.6376e-09 deg/d
Q 3.243902999460852 4.2777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      249  
   data-arc span      6812 days (18.65 yr)  
   first obs. used      2001-11-19  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .63229  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:42:42  

Additional Information
 Earth MOID = 1.90464 au 
 Jupiter MOID = 2.05949 au 
 T_jup = 3.165 
[ 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 15.3   n/a MPO437024  
diameter diameter 4.939 km 1.183 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

213440 (2001 YE121)          Discovered 2001-Dec-17 by LINEAR at Socorro
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

Alternate Designations
 2001 YE121 = 2003 FW19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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