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4189 Sayany (1979 SV9)
Classification: Main-belt Asteroid          SPK-ID: 2004189
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1359344648566149 1.762e-08  
a 2.302024957849166 7.1392e-09 au
q 1.989100427117369 4.1471e-08 au
i 5.353448444719882 5.3519e-07 deg
node 194.1010352506062 8.7367e-06 deg
peri 126.9070724814153 1.0223e-05 deg
M 26.56054931396532 9.6115e-06 deg
tp 2459302.376510322855
(2021-Mar-28.87651032)
3.3871e-05 TDB
period 1275.74380647151
3.49
5.9347e-06
1.625e-08
d
yr
n .2821883188253124 1.3127e-09 deg/d
Q 2.614949488580965 8.1097e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2382  
   data-arc span      23958 days (65.59 yr)  
   first obs. used      1955-11-24  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43729  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 09:38:48  

Additional Information
 Earth MOID = .981589 au 
 Jupiter MOID = 2.6781 au 
 T_jup = 3.573 
[ 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 13.54   n/a E2021B10  
diameter diameter 3.896 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.76132 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 0.473   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4189 Sayany (1979 SV9)          Discovered 1979-Sep-22 by Chernykh, N. S. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1979 SV9 = 1965 UR1 = 1986 TG5 = A923 RC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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