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30823 (1990 SY15)
Classification: Main-belt Asteroid          SPK-ID: 2030823
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1333219187072823 3.1212e-08  
a 2.282886007058616 7.5494e-09 au
q 1.978527264407555 7.1469e-08 au
i 5.967770961176977 3.538e-06 deg
node 194.3577475991062 3.0655e-05 deg
peri 162.1468541120739 3.3315e-05 deg
M 267.7392217971513 1.5207e-05 deg
tp 2459523.378687189396
(2021-Nov-04.87868719)
5.4047e-05 TDB
period 1259.867190070955
3.45
6.2495e-06
1.711e-08
d
yr
n .2857444045191184 1.4174e-09 deg/d
Q 2.587244749709677 8.5559e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1772  
   data-arc span      10870 days (29.76 yr)  
   first obs. used      1990-09-16  
   last obs. used      2020-06-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52127  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:40:38  

Additional Information
 Earth MOID = .973839 au 
 Jupiter MOID = 2.85987 au 
 T_jup = 3.585 
[ 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 14.57   n/a E2021B10  
diameter diameter 2.497 km 0.252 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.43471 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.540   0.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30823 (1990 SY15)          Discovered 1990-Sep-16 by Holt, H. E. at Palomar
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1990 SY15 = 1997 TO8 = 1999 CR79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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