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3627 Sayers (1973 DS)
Classification: Main-belt Asteroid          SPK-ID: 2003627
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1472053443587364 1.5056e-08  
a 2.349129008672771 7.1395e-09 au
q 2.003324664007998 3.5979e-08 au
i 9.711148846438943 7.3605e-07 deg
node 85.65576920964764 2.9205e-06 deg
peri 127.069925341643 6.3203e-06 deg
M 60.1665054454141 6.4585e-06 deg
tp 2458980.708437868882
(2020-May-11.20843787)
2.3498e-05 TDB
period 1315.099851344838
3.60
5.9953e-06
1.641e-08
d
yr
n .2737434725065625 1.2479e-09 deg/d
Q 2.694933353337543 8.1905e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2399  
   data-arc span      17357 days (47.52 yr)  
   first obs. used      1973-02-28  
   last obs. used      2020-09-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4202  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:21:00  

Additional Information
 Earth MOID = 1.01107 au 
 Jupiter MOID = 2.31015 au 
 T_jup = 3.525 
[ 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 13.74   n/a E2021B10  
diameter diameter 11.062 km 0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 19.3 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.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2020) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.055   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
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)

3627 Sayers (1973 DS)          Discovered 1973-Feb-28 by Kohoutek, L. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1973 DS = 1973 GU = 1982 VQ10 = 1982 XK3 = 1984 HC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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