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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09213057146677747 5.2329e-08  
a 3.1148007473636 4.0939e-08 au
q 2.827832374503846 1.6904e-07 au
i 6.391694496200029 5.5318e-06 deg
node 71.4811197769134 5.4069e-05 deg
peri 167.1993446923787 6.8697e-05 deg
M 211.0892062925318 4.8107e-05 deg
tp 2459831.053303392001
(2022-Sep-08.55330339)
0.00027918 TDB
period 2007.908102407252
5.50
3.9586e-05
1.084e-07
d
yr
n .1792910739133933 3.5347e-09 deg/d
Q 3.401769120223354 4.4711e-08 au
  Orbit Determination Parameters
   # obs. used (total)      246  
   data-arc span      8364 days (22.90 yr)  
   first obs. used      1997-11-25  
   last obs. used      2020-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61385  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:17:20  

Additional Information
 Earth MOID = 1.81589 au 
 Jupiter MOID = 1.60287 au 
 T_jup = 3.202 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457521.5 (2016-May-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09400462209200959 5.2187e-08  
q 2.823373245241585 1.6957e-07 au
tp 2457821.398793482768
(2017-Mar-08.89879348)
0.00024954 TDB
node 71.52872224068265 5.4129e-05 deg
peri 166.7063440636499 6.8257e-05 deg
i 6.388431541602758 5.5279e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      246  
   data-arc span      8364 days (22.90 yr)  
   first obs. used      1997-11-25  
   last obs. used      2020-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61385  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:17:20  

Additional Information
 Jupiter MOID = 1.60287 au 
 T_jup = 3.202 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.72346882662923E-15 -8.627964426232827E-15 -3.417447454034421E-12 -1.704426634692907E-15 -5.407333404234635E-13 -1.452553773137656E-15
q -8.627964426232827E-15 2.875247062369912E-14 1.639085277055387E-11 8.46568793720306E-15 2.609817228239896E-12 5.46596242840992E-15
tp -3.417447454034421E-12 1.639085277055387E-11 6.227006808969356E-8 2.749215419415832E-11 1.04305571115404E-8 1.41490513627813E-11
node -1.704426634692907E-15 8.46568793720306E-15 2.749215419415832E-11 2.929969533487834E-9 -2.906855937094891E-9 -3.541807810645873E-11
peri -5.407333404234635E-13 2.609817228239896E-12 1.04305571115404E-8 -2.906855937094891E-9 4.658972752350209E-9 3.755163564226732E-11
i -1.452553773137656E-15 5.46596242840992E-15 1.41490513627813E-11 -3.541807810645873E-11 3.755163564226732E-11 3.055737975886823E-11

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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