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1786 Raahe (1948 TL)
Classification: Main-belt Asteroid          SPK-ID: 2001786
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1119006108592892 4.1894e-08  
a 3.017714563683394 1.4034e-08 au
q 2.680030460608249 1.3e-07 au
i 10.43615604820159 4.5378e-06 deg
node 16.30241989849317 1.9304e-05 deg
peri 348.0342482999289 2.5056e-05 deg
M 239.6805442374236 1.7529e-05 deg
tp 2459640.454390765040
(2022-Mar-01.95439077)
9.524e-05 TDB
period 1914.765814184074
5.24
1.3357e-05
3.657e-08
d
yr
n .1880125482360381 1.3115e-09 deg/d
Q 3.355398666758539 1.5604e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2626  
   data-arc span      26263 days (71.90 yr)  
   first obs. used      1948-09-10  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43795  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:40:54  

Additional Information
 Earth MOID = 1.6795 au 
 Jupiter MOID = 2.10525 au 
 T_jup = 3.213 
[ 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 11.0   n/a MPO473788  
diameter diameter 25.532 km 0.523 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 18.72 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ruthroff, J.C. (2012) Minor Planet Bull. 39, 39.]
geometric albedo albedo 0.075   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1786 Raahe           Discovered 1948 Oct. 9 by H. Alikoski at Turku.
Named for a Finnish town, founded by Per Brahe in 1649 on an ancient market place near Oulu.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5449Last Updated: 2006-03-21

[ show close-approach data ]
Alternate Designations
 1948 TL = 1938 WS = 1948 UH = 1957 JB1 = 1969 TZ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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