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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1152629935936347 3.0082e-08  
a 2.875975978116505 1.1937e-08 au
q 2.544482377375415 8.5723e-08 au
i 1.672020158014652 3.9576e-06 deg
node 21.65876027665986 0.00011501 deg
peri 79.13538846425024 0.0001163 deg
M 140.0828542862685 1.7393e-05 deg
tp 2458307.299623889191
(2018-Jul-07.79962389)
8.5129e-05 TDB
period 1781.460955170966
4.88
1.1091e-05
3.037e-08
d
yr
n .202081330469267 1.2581e-09 deg/d
Q 3.207469578857595 1.3313e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2332  
   data-arc span      8357 days (22.88 yr)  
   first obs. used      1997-10-07  
   last obs. used      2020-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43333  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:32:38  

Additional Information
 Earth MOID = 1.56203 au 
 Jupiter MOID = 1.92575 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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