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2605 Sahade (1974 QA)
Classification: Main-belt Asteroid          SPK-ID: 2002605
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07739125687387303 4.1406e-08  
a 3.09419814125303 1.683e-08 au
q 2.854734258084656 1.2733e-07 au
i 9.426374508090392 4.5207e-06 deg
node 171.8018215989064 2.2864e-05 deg
peri 181.9755376895824 3.3585e-05 deg
M 129.5991946139646 2.5446e-05 deg
tp 2458284.817479885344
(2018-Jun-15.31747989)
0.00013977 TDB
period 1988.019354662829
5.44
1.622e-05
4.441e-08
d
yr
n .181084756119518 1.4774e-09 deg/d
Q 3.333662024421404 1.8132e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2041  
   data-arc span      25781 days (70.58 yr)  
   first obs. used      1950-04-17  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47836  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:07:22  

Additional Information
 Earth MOID = 1.84948 au 
 Jupiter MOID = 2.09039 au 
 T_jup = 3.199 
[ 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 12.4   n/a MPO416736  
diameter diameter 11.802 km 0.463 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.84064 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.105   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2605 Sahade (1974 QA)          Discovered 1974-Aug-16 by Felix Aguilar Observatory at El Leoncito
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1974 QA = 1979 NC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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