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4398 Chiara (1984 HC2)
Classification: Main-belt Asteroid          SPK-ID: 2004398
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06550911970142143 2.6146e-08  
a 2.365351632151951 7.054e-09 au
q 2.210399528945356 6.2004e-08 au
i 4.970646677629235 3.5459e-06 deg
node 113.4677675047382 3.8622e-05 deg
peri 326.4245112017469 4.9938e-05 deg
M 88.11918670394424 3.1737e-05 deg
tp 2458675.255490330212
(2019-Jul-10.75549033)
0.00011714 TDB
period 1328.746075182315
3.64
5.9439e-06
1.627e-08
d
yr
n .27093212670495 1.212e-09 deg/d
Q 2.520303735358546 7.5161e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3470  
   data-arc span      15748 days (43.12 yr)  
   first obs. used      1977-05-23  
   last obs. used      2020-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40781  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:51:53  

Additional Information
 Earth MOID = 1.22819 au 
 Jupiter MOID = 2.60813 au 
 T_jup = 3.540 
[ 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 12.9   n/a MPO502195  
diameter diameter 6.871 km 0.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.215   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4398 Chiara (1984 HC2)          Discovered 1984-Apr-23 by Ferreri, W. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1984 HC2 = 1929 CB = 1977 KJ = 1980 DA3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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