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249504 (2009 YB25)
Classification: Main-belt Asteroid          SPK-ID: 2249504
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09213057260312402 5.3439e-08  
a 3.114800748435365 4.1807e-08 au
q 2.827832371937375 1.7104e-07 au
i 6.391695101166123 5.6194e-06 deg
node 71.48111097375309 5.5841e-05 deg
peri 167.1993533512037 7.0135e-05 deg
M 211.0892061468257 4.8119e-05 deg
tp 2459831.053304633355
(2022-Sep-08.55330463)
0.00027933 TDB
period 2007.908103443597
5.50
4.0426e-05
1.107e-07
d
yr
n .1792910738208555 3.6097e-09 deg/d
Q 3.401769124933354 4.5659e-08 au
  Orbit Determination Parameters
   # obs. used (total)      239  
   data-arc span      8099 days (22.17 yr)  
   first obs. used      1997-11-25  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60798  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:24:03  

Additional Information
 Earth MOID = 1.81589 au 
 Jupiter MOID = 1.60287 au 
 T_jup = 3.202 
[ 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 MPO454850  
diameter diameter 4.111 km 0.711 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249504 (2009 YB25)          Discovered 2009-Dec-20 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2009 YB25 = 1997 WE20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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