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2243 Lonnrot (1941 SA1)
Classification: Main-belt Asteroid          SPK-ID: 2002243
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .196262714391931 4.1094e-08  
a 2.248190821123415 6.9042e-09 au
q 1.80695478809871 9.3877e-08 au
i 6.843508924917791 4.329e-06 deg
node 22.48949868479705 3.2851e-05 deg
peri 303.4657083108621 3.4111e-05 deg
M 32.29964148321331 9.863e-06 deg
tp 2458490.030246879424
(2019-Jan-06.53024688)
3.3587e-05 TDB
period 1231.255496878385
3.37
5.6718e-06
1.553e-08
d
yr
n .2923844814603562 1.3469e-09 deg/d
Q 2.689426854148121 8.2593e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2237  
   data-arc span      32140 days (87.99 yr)  
   first obs. used      1931-11-02  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44633  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:13:45  

Additional Information
 Earth MOID = .805832 au 
 Jupiter MOID = 2.66996 au 
 T_jup = 3.594 
[ 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 12.5   n/a MPO350817  
diameter diameter 8.628 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.180   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2243 Lonnrot (1941 SA1)          Discovered 1941-Sep-25 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1941 SA1 = 1931 VB = 1934 NQ = 1951 QH = 1951 RQ1 = 1951 SF = 1961 OB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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