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243381 Alessio (2008 YM4)
Classification: Main-belt Asteroid          SPK-ID: 2243381
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2212747777112531 5.7854e-08  
a 2.339485262291443 2.5277e-08 au
q 1.821816180919151 1.4219e-07 au
i 24.09040837983428 6.3659e-06 deg
node 274.4507111730933 1.8981e-05 deg
peri 332.3096723090649 2.6106e-05 deg
M 281.6169737459432 2.1019e-05 deg
tp 2459285.076100203912
(2021-Mar-11.57610020)
7.8868e-05 TDB
period 1307.00996082179
3.58
2.1182e-05
5.799e-08
d
yr
n .2754378396425134 4.4639e-09 deg/d
Q 2.857154343663735 3.087e-08 au
  Orbit Determination Parameters
   # obs. used (total)      217  
   data-arc span      6652 days (18.21 yr)  
   first obs. used      2001-11-17  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47196  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 09:20:01  

Additional Information
 Earth MOID = .826687 au 
 Jupiter MOID = 2.30119 au 
 T_jup = 3.418 
[ 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 15.9   n/a MPO454786  
diameter diameter 1.868 km 0.521 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.242   0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243381 Alessio           Discovered 2008 Dec. 22 by G. Muler and J. M. Ruiz at Nazaret Observatory, Lanzarote.
Alessio Muler (b. 2002), second son of the first discoverer, shares with his father a passion for the skies.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100923/MPCPages.arcLast Updated: 2010-12-06

Alternate Designations
 2008 YM4 = 2006 BO217 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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