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2564 Kayala (1977 QX)
Classification: Main-belt Asteroid          SPK-ID: 2002564
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 .1084805533844382 2.7147e-08  
a 2.238304492694951 6.0875e-09 au
q 1.995491982684529 6.0698e-08 au
i 1.96314385340755 3.8453e-06 deg
node 153.4849205428306 0.00010509 deg
peri 295.4292850896069 0.0001072 deg
M 192.7100652698961 2.1381e-05 deg
tp 2459568.887459573848
(2021-Dec-20.38745957)
7.3293e-05 TDB
period 1223.142837473795
3.35
4.9898e-06
1.366e-08
d
yr
n .2943237608646935 1.2007e-09 deg/d
Q 2.481117002705373 6.7478e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2747  
   data-arc span      25991 days (71.16 yr)  
   first obs. used      1949-04-20  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4528  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:46:52  

Additional Information
 Earth MOID = 1.0129 au 
 Jupiter MOID = 2.66971 au 
 T_jup = 3.628 
[ 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 13.3   n/a MPO384773  
diameter diameter 6.174 km 0.209 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.95 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.267   0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2564 Kayala (1977 QX)          Discovered 1977-Aug-19 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1977 QX = 1942 DG = 1949 HL = 1950 PJ = 1954 XB = 1979 FF2 = 1979 FO2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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