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JPL Small-Body Database Browser
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3500 Kobayashi (A919 SD)
Classification: Main-belt Asteroid          SPK-ID: 2003500
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1968207173139565 3.6001e-08  
a 2.239559364691222 6.6089e-09 au
q 1.798767684065508 8.2286e-08 au
i 4.25456849084967 3.9831e-06 deg
node 314.7142576366203 4.6972e-05 deg
peri 10.5329736626183 4.7777e-05 deg
M 279.018467521536 1.0073e-05 deg
tp 2458875.875808651024
(2020-Jan-27.37580865)
3.4816e-05 TDB
period 1224.171586784088
3.35
5.4188e-06
1.484e-08
d
yr
n .2940764218729532 1.3017e-09 deg/d
Q 2.680351045316937 7.9097e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2398  
   data-arc span      36496 days (99.92 yr)  
   first obs. used      1919-09-18  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48094  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:31:50  

Additional Information
 Earth MOID = .786053 au 
 Jupiter MOID = 2.64489 au 
 T_jup = 3.606 
[ 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 12.7   n/a MPO279551  
diameter diameter 7.421 km 1.588 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.606 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.334   0.243 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3500 Kobayashi (A919 SD)          Discovered 1919-Sep-18 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A919 SD = 1929 RS = 1932 KD = 1949 PE = 1962 JV = 1966 SB = 1973 YZ = 1980 XG3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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