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49454 (1998 YH22)
Classification: Main-belt Asteroid          SPK-ID: 2049454
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1343060263571621 3.8385e-08  
a 2.366692521870698 9.2231e-09 au
q 2.048831453649034 9.2218e-08 au
i 5.485909829263542 4.9312e-06 deg
node 207.1538889048068 4.1624e-05 deg
peri 247.3504774485002 4.5417e-05 deg
M 216.7536498436377 1.8909e-05 deg
tp 2459129.666386210371
(2020-Oct-07.16638621)
7.1081e-05 TDB
period 1329.876110824401
3.64
7.7739e-06
2.128e-08
d
yr
n .2707019075459842 1.5824e-09 deg/d
Q 2.684553590092363 1.0462e-08 au
  Orbit Determination Parameters
   # obs. used (total)      776  
   data-arc span      10068 days (27.56 yr)  
   first obs. used      1992-04-07  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55474  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:41:21  

Additional Information
 Earth MOID = 1.07282 au 
 Jupiter MOID = 2.49988 au 
 T_jup = 3.529 
[ 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 15.6   n/a MPO267872  
diameter diameter 1.700 km 0.436 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.351   0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49454 (1998 YH22)          Discovered 1998-Dec-30 by Cooney Jr., W. R., Martin, T. at Baton Rouge
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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