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49380 (1998 XU4)
Classification: Main-belt Asteroid          SPK-ID: 2049380
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04052266268848671 4.0632e-08  
a 2.834254648790669 1.5809e-08 au
q 2.71940310368445 1.1368e-07 au
i 2.48546248614974 5.2291e-06 deg
node 42.26314952610634 0.00010597 deg
peri 41.65717821631538 0.00013003 deg
M 191.3623578278636 7.5133e-05 deg
tp 2459816.910814663446
(2022-Aug-25.41081466)
0.00036568 TDB
period 1742.836827490953
4.77
1.4582e-05
3.992e-08
d
yr
n .2065597847839079 1.7282e-09 deg/d
Q 2.949106193896889 1.6449e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1320  
   data-arc span      8815 days (24.13 yr)  
   first obs. used      1995-03-23  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51797  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:40:45  

Additional Information
 Earth MOID = 1.73595 au 
 Jupiter MOID = 2.13381 au 
 T_jup = 3.309 
[ 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 14.2   n/a MPO395468  
diameter diameter 3.646 km 0.767 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.334   0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49380 (1998 XU4)          Discovered 1998-Dec-12 by Kobayashi, T. at Oizumi
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 XU4 = 2000 FJ8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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