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49404 (1998 XN45)
Classification: Main-belt Asteroid          SPK-ID: 2049404
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09174639381808994 3.6344e-08  
a 2.765649406316575 1.2045e-08 au
q 2.511911046721888 1.0455e-07 au
i 3.370763319478796 3.163e-06 deg
node 52.99475481371158 6.226e-05 deg
peri 316.0871168175747 6.5068e-05 deg
M 312.9828288198134 1.7868e-05 deg
tp 2459219.905802786321
(2021-Jan-05.40580279)
8.3157e-05 TDB
period 1679.941328251601
4.60
1.0975e-05
3.005e-08
d
yr
n .214293198188457 1.4e-09 deg/d
Q 3.019387765911262 1.3151e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1471  
   data-arc span      10789 days (29.54 yr)  
   first obs. used      1991-04-10  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50536  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:32:49  

Additional Information
 Earth MOID = 1.51257 au 
 Jupiter MOID = 2.43584 au 
 T_jup = 3.331 
[ 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 14.3   n/a MPO395468  
diameter diameter 5.346 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.142   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49404 (1998 XN45)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 XN45 = 2000 GK158 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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