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JPL Small-Body Database Browser
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277524 (2005 XY21)
Classification: Main-belt Asteroid          SPK-ID: 2277524
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1371746601144664 5.5055e-08  
a 3.116113392244978 3.6659e-08 au
q 2.688661596785636 1.6554e-07 au
i 4.165185623551037 6.036e-06 deg
node 273.3125812593403 8.344e-05 deg
peri 173.426842916197 8.7271e-05 deg
M 145.4235114511622 2.7598e-05 deg
tp 2457788.884313215846
(2017-Feb-04.38431322)
0.00014561 TDB
period 2009.177500437536
5.50
3.5455e-05
9.707e-08
d
yr
n .1791777978409589 3.1619e-09 deg/d
Q 3.54356518770432 4.1688e-08 au
  Orbit Determination Parameters
   # obs. used (total)      304  
   data-arc span      6729 days (18.42 yr)  
   first obs. used      2001-01-21  
   last obs. used      2019-06-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58129  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:47:02  

Additional Information
 Earth MOID = 1.70503 au 
 Jupiter MOID = 1.66801 au 
 T_jup = 3.199 
[ 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 15.9   n/a MPO437263  
diameter diameter 3.836 km 0.959 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

277524 (2005 XY21)          Discovered 2005-Dec-02 by LINEAR at Socorro
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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