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30768 (1983 YK)
Classification: Outer Main-belt Asteroid          SPK-ID: 2030768
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01605287284393405 1.7941e-08  
a 3.24056651680674 1.6851e-08 au
q 3.188546114570131 5.7518e-08 au
i 9.893957330487591 3.0152e-07 deg
node 160.1784397062516 2.8548e-06 deg
peri 6.688392019135597 4.8014e-05 deg
M 57.52037201035173 4.7821e-05 deg
tp 2458860.053383161527
(2020-Jan-11.55338316)
0.0002822 TDB
period 2130.736950724056
5.83
1.662e-05
4.55e-08
d
yr
n .1689556281819145 1.3179e-09 deg/d
Q 3.292586919043349 1.7122e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2272  
   data-arc span      13595 days (37.22 yr)  
   first obs. used      1983-12-29  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49613  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:31:28  

Additional Information
 Earth MOID = 2.19522 au 
 Jupiter MOID = 1.67441 au 
 T_jup = 3.160 
[ 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 12.76   n/a E2021B10  
diameter diameter 18.289 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 20.2269 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 0.048   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30768 (1983 YK)          Discovered 1983-Dec-29 by Massone, G., DeSanctis, G. at Pino Torinese
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1983 YK = 1985 FS1 = 1993 PF7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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