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79911 (1999 CK)
Classification: Main-belt Asteroid          SPK-ID: 2079911
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09267652119467784 3.9427e-08  
a 2.662879638488484 1.1627e-08 au
q 2.41609321723323 1.0753e-07 au
i 13.00004067202816 4.8015e-06 deg
node 352.6074338002196 1.6723e-05 deg
peri 139.6696683391151 3.3576e-05 deg
M 16.23256480881295 2.6886e-05 deg
tp 2459128.933401361305
(2020-Oct-06.43340136)
0.00011857 TDB
period 1587.178354953651
4.35
1.0395e-05
2.846e-08
d
yr
n .2268176092979246 1.4856e-09 deg/d
Q 2.909666059743738 1.2705e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1244  
   data-arc span      8147 days (22.31 yr)  
   first obs. used      1998-11-25  
   last obs. used      2021-03-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50367  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:44:20  

Additional Information
 Earth MOID = 1.44234 au 
 Jupiter MOID = 2.11549 au 
 T_jup = 3.342 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457433.5 (2016-Feb-15.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09182651332941288 3.9999e-08  
q 2.417708449586518 1.0906e-07 au
tp 2457545.829067350264
(2016-Jun-06.32906735)
0.00012003 TDB
node 352.6522467385641 1.6706e-05 deg
peri 140.5446892873963 3.3573e-05 deg
i 13.00816035183903 4.8034e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1244  
   data-arc span      8147 days (22.31 yr)  
   first obs. used      1998-11-25  
   last obs. used      2021-03-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50367  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:44:20  

Additional Information
 Jupiter MOID = 2.11549 au 
 T_jup = 3.342 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.599955589332097E-15 -4.34259200133652E-15 1.958810209600178E-12 -1.476032543017428E-14 5.294666444324054E-13 5.332456446015664E-16
q -4.34259200133652E-15 1.189355718569605E-14 -5.439833979553733E-12 3.923972378647068E-14 -1.467591229771143E-12 -1.091497583933855E-15
tp 1.958810209600178E-12 -5.439833979553733E-12 1.440645605576603E-8 -6.029030888943484E-11 3.504280716842695E-9 1.56403909513358E-11
node -1.476032543017428E-14 3.923972378647068E-14 -6.029030888943484E-11 2.790792016601006E-10 -2.861142561492505E-10 1.350350736428645E-11
peri 5.294666444324054E-13 -1.467591229771143E-12 3.504280716842695E-9 -2.861142561492505E-10 1.127148300210857E-9 -9.486491389383363E-12
i 5.332456446015664E-16 -1.091497583933855E-15 1.56403909513358E-11 1.350350736428645E-11 -9.486491389383363E-12 2.307242621896813E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.51   n/a E2021B10  
diameter diameter 3.814 km 0.618 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 25.5219 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.278   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79911 (1999 CK)          Discovered 1999-Feb-04 by Kobayashi, T. at Oizumi
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 1999 CK = 2001 QS284 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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