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1705 Tapio (1941 SL1)
Classification: Main-belt Asteroid          SPK-ID: 2001705
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2454163491371709 3.488e-08  
a 2.298840005779836 6.6557e-09 au
q 1.734667084310876 7.9694e-08 au
i 7.71002913463047 3.7365e-06 deg
node 188.5978498366167 2.5721e-05 deg
peri 156.4559294642535 2.6652e-05 deg
M 218.3260957892477 9.2149e-06 deg
tp 2459501.512899713214
3.3651e-05 TDB
period 1273.097151529395
n .2827749630635223 1.2281e-09 deg/d
Q 2.863012927248796 8.2891e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2366  
   data-arc span      28703 days (78.58 yr)  
   first obs. used      1941-09-26  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46721  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:28:42  

Additional Information
 Earth MOID = .731128 au 
 Jupiter MOID = 2.57881 au 
 T_jup = 3.541 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3   n/a MPO467634  
diameter diameter 11.969 km 0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 54.8 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2014)]
geometric albedo albedo 0.089   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
SMASSII spectral type spec_B B   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1705 Tapio           Discovered 1941 Sept. 29 by L. Oterma at Turku.
Named for the guardian spirit of the forest in Kalevala, the Finnish national epic. Tapio is also a common boy's name in Finland.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5281Last Updated: 2007-10-23

Alternate Designations
 1941 SL1 = 1948 TJ1 = 1948 TV1 = 1955 VN = 1982 FM3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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