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5945 Roachapproach (1984 SQ3)
Classification: Main-belt Asteroid          SPK-ID: 2005945
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1445283347909821 1.4074e-08  
a 2.226022859563509 6.5635e-09 au
q 1.904299482464134 3.2842e-08 au
i 4.893455452543188 5.9596e-07 deg
node 21.80232979484641 9.3144e-06 deg
peri 298.0447895730721 1.1939e-05 deg
M 9.80857534082616 8.0687e-06 deg
tp 2459167.448110796531
(2020-Nov-13.94811080)
2.7138e-05 TDB
period 1213.089536430728
3.32
5.3653e-06
1.469e-08
d
yr
n .2967629257270057 1.3125e-09 deg/d
Q 2.547746236662883 7.5121e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2664  
   data-arc span      25231 days (69.08 yr)  
   first obs. used      1951-11-30  
   last obs. used      2020-12-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44187  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 18:09:36  

Additional Information
 Earth MOID = .895675 au 
 Jupiter MOID = 2.74178 au 
 T_jup = 3.627 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.34   n/a E2021B10  
diameter diameter 6.522 km 0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.6047 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46, 458-503.]
geometric albedo albedo 0.182   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5945 Roachapproach           Discovered 1984 Sept. 28 by B. A. Skiff at the Anderson Mesa Station of Lowell Observatory.
Named in honor of Steve Roach, musician and composer of `space music'. Among the most progressive performers in the genre, his prolific output includes seminal works such as "Structures from Silence" (1984), "Dreamtime Return" (1988) and "The Magnificent Void" (1996). His mixture of heavily-processed electronic sounds with primitive woodwinds and percussion conveys powerful impressions of spatial immensity. These have inspired the discoverer through endless nights at the telescope. Name suggested by L. Kohanov.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980211/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 1984 SQ3 = 1954 QC = 1954 SY = 1983 GL1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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