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15889 Xiaoyuhe (1997 FD4)
Classification: Main-belt Asteroid          SPK-ID: 2015889
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05002328955917178 3.2278e-08  
a 2.251362202623203 7.486e-09 au
q 2.138741659258808 7.2181e-08 au
i 6.495764979098635 4.456e-06 deg
node 180.7647945595137 2.8977e-05 deg
peri 246.2630425506287 5.2911e-05 deg
M 69.75866441779038 4.3895e-05 deg
tp 2458761.409599727064
(2019-Oct-04.90959973)
0.00015031 TDB
period 1233.86169756292
3.38
6.1541e-06
1.685e-08
d
yr
n .2917668979522254 1.4552e-09 deg/d
Q 2.363982745987598 7.8605e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1427  
   data-arc span      8976 days (24.57 yr)  
   first obs. used      1995-10-21  
   last obs. used      2020-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56682  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:30:47  

Additional Information
 Earth MOID = 1.16045 au 
 Jupiter MOID = 2.75453 au 
 T_jup = 3.617 
[ 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 15.2   n/a MPO449066  
diameter diameter 1.916 km 0.279 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.333   0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15889 Xiaoyuhe           Discovered 1997 Mar. 31 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Xiaoyu He (b. 1994) is a finalist in the 2012 Intel Science Talent Search, a science competition for high-school seniors, for his mathematics project. He attends the Acton-Boxborough Regional High School, Acton, Massachusetts.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

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Alternate Designations
 1997 FD4 = 1998 RW16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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