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4163 Saaremaa (1941 HC)
Classification: Main-belt Asteroid          SPK-ID: 2004163
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .04757749308443587 3.9678e-08  
a 3.021487933554261 1.6326e-08 au
q 2.877733112290876 1.2352e-07 au
i 11.10552254534195 4.1853e-06 deg
node 129.0026021855705 2.103e-05 deg
peri 4.012886741710466 4.8521e-05 deg
M 86.63209084464327 4.2844e-05 deg
tp 2458538.857250964632
(2019-Feb-24.35725096)
0.00022872 TDB
period 1918.358290010134
5.25
1.5548e-05
4.257e-08
d
yr
n .1876604604440698 1.521e-09 deg/d
Q 3.165242754817645 1.7103e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2364  
   data-arc span      28768 days (78.76 yr)  
   first obs. used      1941-04-03  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43729  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:25:05  

Additional Information
 Earth MOID = 1.89229 au 
 Jupiter MOID = 1.86797 au 
 T_jup = 3.216 
[ 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 11.5   n/a MPO473823  
diameter diameter 19.930 km 0.202 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.086   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4163 Saaremaa (1941 HC)          Discovered 1941-Apr-19 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1941 HC = 1978 GZ4 = 1979 OA15 = 1982 BB9 = 1988 FC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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