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JPL Small-Body Database Browser
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25598 (1999 YK16)
Classification: Main-belt Asteroid          SPK-ID: 2025598
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0352642822646162 3.9032e-08  
a 2.979596786668919 1.7138e-08 au
q 2.874523444549083 1.1697e-07 au
i 11.25194860876525 4.1797e-06 deg
node 145.3272370620473 2.1988e-05 deg
peri 42.89528728450246 6.4171e-05 deg
M 307.3540540763112 6.0455e-05 deg
tp 2459275.224318871436
(2021-Mar-01.72431887)
0.000316 TDB
period 1878.601534429175
5.14
1.6208e-05
4.438e-08
d
yr
n .1916319099086588 1.6534e-09 deg/d
Q 3.084670128788756 1.7743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1687  
   data-arc span      15815 days (43.30 yr)  
   first obs. used      1976-09-16  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49346  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 02:23:12  

Additional Information
 Earth MOID = 1.88874 au 
 Jupiter MOID = 1.90693 au 
 T_jup = 3.230 
[ 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 13.4   n/a MPO319402  
diameter diameter 7.732 km 0.228 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.383 h n/a LCDB (Rev. 2019-August); 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 0.170   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

25598 (1999 YK16)          Discovered 1999-Dec-31 by Spacewatch at Kitt Peak
Reference: 20010606/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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