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16901 Johnbrooks (1998 DJ14)
Classification: Main-belt Asteroid          SPK-ID: 2016901
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1044319808063389 3.9627e-08  
a 2.642564464689296 1.345e-08 au
q 2.36659622323335 1.0292e-07 au
i 14.34475457215718 4.0101e-06 deg
node 138.2742163247992 1.6867e-05 deg
peri 259.3538990730368 2.5351e-05 deg
M 197.6074284103082 2.0292e-05 deg
tp 2459908.283560563872
(2022-Nov-24.78356056)
8.981e-05 TDB
period 1569.05010684102
4.30
1.1979e-05
3.28e-08
d
yr
n .2294381794631088 1.7517e-09 deg/d
Q 2.918532706145242 1.4855e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1314  
   data-arc span      9841 days (26.94 yr)  
   first obs. used      1994-02-08  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50142  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:46:08  

Additional Information
 Earth MOID = 1.4192 au 
 Jupiter MOID = 2.48108 au 
 T_jup = 3.342 
[ 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 14.38   n/a E2021B10  

16901 Johnbrooks           Discovered 1998 Feb. 23 at Farra d´Isonzo.
John J. Brooks (b. 1933), a mechanical engineer and amateur astronomer in the \gamma -ray bursts field at the Santa Barbara Astronomical Group, co-founded a small CCD brand that in 1991 developed star tracking equipment, allowing the start of the CCD revolution in the amateur astronomer's world.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020921/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1998 DJ14 = 1994 CZ16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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