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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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04757748271174882 3.0704e-08  
a 3.021487936453685 1.456e-08 au
q 2.877733146393302 9.1511e-08 au
i 11.10552686253025 3.4014e-06 deg
node 129.002604412303 2.0917e-05 deg
peri 4.012883491219903 4.7904e-05 deg
M 86.63209067791968 4.2584e-05 deg
tp 2458538.857251188575
(2019-Feb-24.35725119)
0.00022715 TDB
period 1918.358292771423
5.25
1.3866e-05
3.796e-08
d
yr
n .1876604601739508 1.3564e-09 deg/d
Q 3.165242726514068 1.5253e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2781  
   data-arc span      28977 days (79.33 yr)  
   first obs. used      1941-04-03  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41201  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:12:18  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1928-Jan-10 17:37 00:02 Jupiter 1.93789438545961 1.93789377665993 1.93789499426128 3.3514065602982 3.21834709902784 2425256.234218708 1.98656480815977 123.897229317489 13.3974003362996 76.8959060659031 3861859.0943875 T 39 CATAB v2.0f-lin.ifort 2020-Aug-24 23:12:35 2020-Aug-24 23:12
1975-Mar-07 23:38 < 00:01 Jupiter 1.90486677247697 1.90486635752808 1.90486718742608 3.42014124953272 3.28755859071978 2442479.484786402 0.904258717860729 65.5519820196839 13.5045300348224 77.0279633580235 3864041.50690691 T 39 CATAB v2.0f-lin.ifort 2020-Aug-24 23:12:35 2020-Aug-24 23:12
2022-May-04 13:25 < 00:01 Jupiter 1.8786004270121 1.87860007655244 1.87860077747176 3.51634788083368 3.38569687337091 2459704.058971867 0.249536534104335 36.8256501988338 13.2932448465473 75.6859724730777 3946323.64098239 T 39 CATAB v2.0f-lin.ifort 2020-Aug-24 23:12:35 2020-Aug-24 23:12
2069-Jul-03 10:55 00:01 Jupiter 1.86633537199748 1.86633504451239 1.86633569948256 3.63001157715251 3.50275589084573 2476930.955159016 1.23674124936006 98.7691884019092 14.1712167842467 87.3390036087697 4111478.82559933 T 39 CATAB v2.0f-lin.ifort 2020-Aug-24 23:12:35 2020-Aug-24 23:12
2116-Sep-04 17:35 00:02 Jupiter 1.87575600817966 1.87575564002053 1.87575637634028 3.75604264726735 3.63383128792763 2494160.232874230 2.25880383667091 174.756325450329 14.2946323074275 -88.2860785699003 4357947.63048938 T 39 CATAB v2.0f-lin.ifort 2020-Aug-24 23:12:35 2020-Aug-24 23:12
2163-Nov-08 03:21 00:03 Jupiter 1.89363096544733 1.89363031498428 1.89363161591964 3.86684141734203 3.74938142686376 2511390.639398426 3.28286724839033 246.816046864611 14.5893033504895 -84.4775644984575 4616764.41896391 T 39 CATAB v2.0f-lin.ifort 2020-Aug-24 23:12:35 2020-Aug-24 23:12

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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