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49456 (1998 YD28)
Classification: Main-belt Asteroid          SPK-ID: 2049456
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1985670121444499 7.1499e-08  
a 2.565555147289885 1.1555e-08 au
q 2.056120527200718 1.8571e-07 au
i 10.42965475500562 3.6151e-06 deg
node 290.9542359772913 2.9131e-05 deg
peri 105.2072747440433 3.111e-05 deg
M 133.9009433059601 1.0391e-05 deg
tp 2458442.220611415910
(2018-Nov-19.72061142)
4.2238e-05 TDB
period 1500.964630480885
4.11
1.014e-05
2.776e-08
d
yr
n .2398457583138796 1.6203e-09 deg/d
Q 3.074989767379051 1.3849e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1413  
   data-arc span      14093 days (38.58 yr)  
   first obs. used      1981-10-23  
   last obs. used      2020-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48503  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:32:33  

Additional Information
 Earth MOID = 1.09265 au 
 Jupiter MOID = 2.43514 au 
 T_jup = 3.382 
[ 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 14.3   n/a MPO493207  
diameter diameter 3.984 km 0.806 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.255   0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

49456 (1998 YD28)          Discovered 1998-Dec-21 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 YD28 = 1981 UB13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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