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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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06550911775283169 2.6167e-08  
a 2.365351632609614 7.0582e-09 au
q 2.210399533982137 6.2062e-08 au
i 4.970646805398851 3.5495e-06 deg
node 113.4677673961646 3.8622e-05 deg
peri 326.4245107684717 4.9939e-05 deg
M 88.11918693774739 3.1737e-05 deg
tp 2458675.255489372859
(2019-Jul-10.75548937)
0.00011714 TDB
period 1328.746075567956
3.64
5.9474e-06
1.628e-08
d
yr
n .2709321266263177 1.2127e-09 deg/d
Q 2.52030373123709 7.5205e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3444  
   data-arc span      15731 days (43.07 yr)  
   first obs. used      1977-05-23  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40603  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:08:59  

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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