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27867 (1995 KF4)
Classification: Main-belt Asteroid          SPK-ID: 2027867
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 .127263191759394 4.0672e-08  
a 2.616798179421797 1.0121e-08 au
q 2.283776090918407 1.0438e-07 au
i 11.57612790024375 5.2088e-06 deg
node 221.6962462906384 1.7036e-05 deg
peri 220.417533691993 2.744e-05 deg
M 103.3740172083925 1.9396e-05 deg
tp 2458556.520760210413
(2019-Mar-14.02076021)
8.3492e-05 TDB
period 1546.15763845226
4.23
8.9701e-06
2.456e-08
d
yr
n .2328352498134462 1.3508e-09 deg/d
Q 2.949820267925186 1.1409e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2028  
   data-arc span      10578 days (28.96 yr)  
   first obs. used      1991-05-12  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45663  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:24:06  

Additional Information
 Earth MOID = 1.31126 au 
 Jupiter MOID = 2.37357 au 
 T_jup = 3.367 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457106.5 (2015-Mar-25.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1265588278020109 4.0336e-08  
q 2.286641182562925 1.0328e-07 au
tp 2457012.343570213008
(2014-Dec-20.84357021)
8.5741e-05 TDB
node 221.7648220763563 1.7055e-05 deg
peri 221.0216771138396 2.7601e-05 deg
i 11.56705113783488 5.2054e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2028  
   data-arc span      10578 days (28.96 yr)  
   first obs. used      1991-05-12  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45663  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:24:06  

Additional Information
 Jupiter MOID = 2.37357 au 
 T_jup = 3.367 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.626984587004673E-15 -4.15158580044061E-15 -1.896704562313915E-12 1.366661201951468E-14 -5.057417833220557E-13 -4.429153714727825E-16
q -4.15158580044061E-15 1.066645295401468E-14 4.784622031194118E-12 -3.4555996506904E-14 1.277601837969043E-12 1.283358873298962E-15
tp -1.896704562313915E-12 4.784622031194118E-12 7.351586226155947E-9 -3.303457481160992E-11 1.869218185425045E-9 3.911170726020111E-13
node 1.366661201951468E-14 -3.4555996506904E-14 -3.303457481160992E-11 2.908814637183016E-10 -2.927269705008538E-10 -1.914775457555406E-11
peri -5.057417833220557E-13 1.277601837969043E-12 1.869218185425045E-9 -2.927269705008538E-10 7.617960834696385E-10 1.887876116805984E-11
i -4.429153714727825E-16 1.283358873298962E-15 3.911170726020111E-13 -1.914775457555406E-11 1.887876116805984E-11 2.709630410307374E-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 13.3   n/a MPO502366  
diameter diameter 7.082 km 0.252 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 418.940 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 0.222   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

27867 (1995 KF4)          Discovered 1995-May-26 by Spacewatch at Kitt Peak
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 KF4 = 1991 JK4 = 1999 FV31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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