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6386 Keithnoll (1989 NK1)
Classification: Mars-crossing Asteroid          SPK-ID: 2006386
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3019538773469406 3.2584e-08  
a 2.271085349364684 7.294e-09 au
q 1.585322322338186 7.3428e-08 au
i 8.731083168153717 3.813e-06 deg
node 119.8431680247404 2.3835e-05 deg
peri 268.0307877562036 2.4958e-05 deg
M 191.4840716167038 1.0304e-05 deg
tp 2459185.676755898749
(2020-Dec-02.17675590)
3.7502e-05 TDB
period 1250.111097180006
3.42
6.0225e-06
1.649e-08
d
yr
n .2879744054845095 1.3873e-09 deg/d
Q 2.956848376391182 9.4965e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2003  
   data-arc span      23252 days (63.66 yr)  
   first obs. used      1955-09-12  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44328  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:17:32  

Additional Information
 Earth MOID = .619457 au 
 Jupiter MOID = 2.54549 au 
 T_jup = 3.536 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6   n/a MPO448977  
rotation period rot_per 3.145 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2004) Minor Planet Bull. 31, 36-39.]
[Skiff, B.A. (2018) Posting on CALL web site: http://www.minorplanet.info/call.html]
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

6386 Keithnoll           Discovered 1989 July 10 by H. E. Holt at Palomar.
The discoverer of numerous transneptunian binaries, Keith Noll (b. 1958), of the Space Telescope Science Institute, has also detected and exploited useful molecular tracers (such as carbon monoxide and ozone) in brown dwarfs and the giant planets. He is also the creator of the Hubble Heritage project of HST images.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20061109/MPCPages.arcLast Updated: 2006-11-13

Alternate Designations
 1989 NK1 = 1955 RG1 = 1991 FW4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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