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JPL Small-Body Database Browser
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49597 (1999 FY12)
Classification: Main-belt Asteroid          SPK-ID: 2049597
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06314839752516704 4.2987e-08  
a 3.029540584241392 2.0653e-08 au
q 2.83822995110909 1.3527e-07 au
i 9.574474675876843 5.5814e-06 deg
node 176.6122868825283 2.839e-05 deg
peri 268.4986558106083 5.4624e-05 deg
M 13.09652956508712 4.5081e-05 deg
tp 2458530.432388076872
(2019-Feb-15.93238808)
0.00024125 TDB
period 1926.032401711179
5.27
1.9695e-05
5.392e-08
d
yr
n .1869127433578785 1.9113e-09 deg/d
Q 3.220851217373695 2.1957e-08 au
  Orbit Determination Parameters
   # obs. used (total)      949  
   data-arc span      7274 days (19.92 yr)  
   first obs. used      1999-03-14  
   last obs. used      2019-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55218  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:51:14  

Additional Information
 Earth MOID = 1.87507 au 
 Jupiter MOID = 1.94163 au 
 T_jup = 3.219 
[ 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 MPO337654  
diameter diameter 5.539 km 0.178 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.368 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.132   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49597 (1999 FY12)          Discovered 1999-Mar-19 by Spacewatch at Kitt Peak
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 FY12 = 2000 KN78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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