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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07757386608178858 1.6579e-08  
a 3.093818524286087 1.5216e-08 au
q 2.853819060401761 5.5417e-08 au
i 9.427661422942716 1.3549e-06 deg
node 171.7976328205949 4.558e-06 deg
peri 182.0070893901135 1.707e-05 deg
M 165.777051218495 1.9217e-05 deg
tp 2458285.201839368552
(2018-Jun-15.70183937)
0.00010406 TDB
period 1987.653510575652
5.44
1.4664e-05
4.015e-08
d
yr
n .1811180862683351 1.3362e-09 deg/d
Q 3.333817988170413 1.6397e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2282  
   data-arc span      25909 days (70.93 yr)  
   first obs. used      1950-04-17  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46527  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:22:54  

Additional Information
 Earth MOID = 1.84684 au 
 Jupiter MOID = 2.09018 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 12.49   n/a E2021B10  
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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