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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0352642829150565 3.8315e-08  
a 2.979596786918963 1.6915e-08 au
q 2.87452344285226 1.1532e-07 au
i 11.25194842526355 4.1496e-06 deg
node 145.3272358397906 2.1731e-05 deg
peri 42.89528858192519 6.4076e-05 deg
M 307.3540538864316 6.043e-05 deg
tp 2459275.224319896874
(2021-Mar-01.72431990)
0.00031586 TDB
period 1878.60153466565
5.14
1.5997e-05
4.38e-08
d
yr
n .1916319098845366 1.6318e-09 deg/d
Q 3.084670130985667 1.7512e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1727  
   data-arc span      15846 days (43.38 yr)  
   first obs. used      1976-09-16  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48946  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:30:55  

Additional Information
 Earth MOID = 1.88874 au 
 Jupiter MOID = 1.90693 au 
 T_jup = 3.230 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456579.5 (2013-Oct-14.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03785557794272766 3.8015e-08  
q 2.864536063535978 1.1456e-07 au
tp 2457411.785432414570
(2016-Jan-24.28543241)
0.00029277 TDB
node 145.383783788142 2.1739e-05 deg
peri 45.95489783138025 6.061e-05 deg
i 11.25095296443065 4.1497e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1727  
   data-arc span      15846 days (43.38 yr)  
   first obs. used      1976-09-16  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48946  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:30:55  

Additional Information
 Jupiter MOID = 1.90693 au 
 T_jup = 3.230 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.44516472769312E-15 -4.31201432835595E-15 2.863908780622833E-13 3.495906261001362E-16 5.424696357999616E-14 -2.333162226692175E-15
q -4.31201432835595E-15 1.312454518937771E-14 -1.151483811433811E-13 6.86599418472194E-16 -4.2303587888728E-14 7.487317446892704E-15
tp 2.863908780622833E-13 -1.151483811433811E-13 8.57124912336641E-8 3.097534776221367E-11 1.658257931815982E-8 -2.371253434399267E-12
node 3.495906261001362E-16 6.86599418472194E-16 3.097534776221367E-11 4.725843602453176E-10 -4.573599739368502E-10 6.257742150041251E-12
peri 5.424696357999616E-14 -4.2303587888728E-14 1.658257931815982E-8 -4.573599739368502E-10 3.673623517736184E-9 -6.644022620573795E-12
i -2.333162226692175E-15 7.487317446892704E-15 -2.371253434399267E-12 6.257742150041251E-12 -6.644022620573795E-12 1.722013944888654E-11

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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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