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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1984204722815564 7.708e-08  
a 2.566270833995181 1.3305e-08 au
q 2.057070163111474 2.0193e-07 au
i 10.42898593802484 3.9931e-06 deg
node 290.9523136494707 3.3037e-05 deg
peri 105.2952960143014 3.5071e-05 deg
M 37.90712634957495 1.0385e-05 deg
tp 2458442.385928824021
(2018-Nov-19.88592882)
4.3155e-05 TDB
period 1501.592737429716
4.11
1.1677e-05
3.197e-08
d
yr
n .2397454323175629 1.8644e-09 deg/d
Q 3.075471504878888 1.5944e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1247  
   data-arc span      13924 days (38.12 yr)  
   first obs. used      1981-10-23  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4982  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:20:00  

Additional Information
 Earth MOID = 1.09302 au 
 Jupiter MOID = 2.43313 au 
 T_jup = 3.381 
[ 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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