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17854 (1998 JC4)
Classification: Main-belt Asteroid          SPK-ID: 2017854
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07740297419733708 1.8374e-08  
a 3.073387994476135 1.596e-08 au
q 2.835498622841293 5.9013e-08 au
i 8.933985976972956 2.4196e-07 deg
node 213.5895150898642 3.1586e-06 deg
peri 211.7315648414864 1.2762e-05 deg
M 241.3267674477345 1.4335e-05 deg
tp 2459849.246135930349
(2022-Sep-26.74613593)
7.9552e-05 TDB
period 1967.997364798059
5.39
1.533e-05
4.197e-08
d
yr
n .1829270742122871 1.4249e-09 deg/d
Q 3.311277366110977 1.7195e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2028  
   data-arc span      10365 days (28.38 yr)  
   first obs. used      1992-04-22  
   last obs. used      2020-09-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44951  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:15:32  

Additional Information
 Earth MOID = 1.85194 au 
 Jupiter MOID = 2.03105 au 
 T_jup = 3.207 
[ 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 12.65   n/a E2021B10  
diameter diameter 10.126 km 0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.143   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17854 (1998 JC4)          Discovered 1998-May-05 by Zoltowski, F. B. at Woomera
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 JC4 = 1992 HT4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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