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49442 (1998 YD7)
Classification: Main-belt Asteroid          SPK-ID: 2049442
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1157606930315158 3.0788e-08  
a 2.874764221646445 1.3342e-08 au
q 2.541979523046447 8.8859e-08 au
i 1.672492392191098 4.3609e-06 deg
node 21.66824979006796 0.00012213 deg
peri 78.97451543947558 0.00012381 deg
M 59.33414632386575 1.9131e-05 deg
tp 2458307.070366560153
(2018-Jul-07.57036656)
9.46e-05 TDB
period 1780.33517937134
4.87
1.2394e-05
3.393e-08
d
yr
n .2022091144248022 1.4077e-09 deg/d
Q 3.207548920246444 1.4887e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2077  
   data-arc span      7883 days (21.58 yr)  
   first obs. used      1997-10-07  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43443  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:40:51  

Additional Information
 Earth MOID = 1.55966 au 
 Jupiter MOID = 1.92782 au 
 T_jup = 3.286 
[ 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 13.3   n/a MPO474375  
diameter diameter 7.549 km 0.289 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.262   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49442 (1998 YD7)          Discovered 1998-Dec-20 by Uto, F. at Uto
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 YD7 = 2000 GF55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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