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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 | 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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1360322001535756 1.762e-08  
a 2.302250691309396 7.0602e-09 au
q 1.989070464465489 4.1548e-08 au
i 5.35205209951171 5.3548e-07 deg
node 194.1236751479119 8.7476e-06 deg
peri 127.0186898809103 1.0227e-05 deg
M 331.1541660387416 9.5555e-06 deg
tp 2459302.736963814383
(2021-Mar-29.23696381)
3.4062e-05 TDB
period 1275.931457645135
3.49
5.8692e-06
1.607e-08
d
yr
n .2821468174038264 1.2979e-09 deg/d
Q 2.615430918153304 8.0206e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2350  
   data-arc span      23663 days (64.79 yr)  
   first obs. used      1955-11-24  
   last obs. used      2020-09-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43502  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:02:54  

Additional Information
 Earth MOID = .980312 au 
 Jupiter MOID = 2.67934 au 
 T_jup = 3.572 
[ 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 13.54   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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2054-Aug-17 03:24 < 00:01 Juno 0.0234463033281457 0.0234453091888433 0.0234472974905993 6.16392219515379 6.16392211097272 2471496.641834559 0.352615304923822 242.72642466498 48.9582470339327 -88.1552384452785 71575.7189659454 T 40 CATAB v2.0f-lin.ifort 2021-Apr-12 16:03:54 2021-Apr-12 16:03

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