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6520 Sugawa (1991 HH)
Classification: Main-belt Asteroid          SPK-ID: 2006520
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1964410248934131 1.2638e-08  
a 2.342886083430988 6.3343e-09 au
q 1.88264713999329 3.1935e-08 au
i 4.792367588209453 7.3108e-07 deg
node 236.9976114657599 7.8622e-06 deg
peri 63.36366442811156 9.0414e-06 deg
M 30.51885861169668 6.8136e-06 deg
tp 2459089.457054727247
(2020-Aug-27.95705473)
2.4573e-05 TDB
period 1309.860922612297
3.59
5.3121e-06
1.454e-08
d
yr
n .2748383387772502 1.1146e-09 deg/d
Q 2.803125026868686 7.5787e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2608  
   data-arc span      18396 days (50.37 yr)  
   first obs. used      1970-09-08  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44231  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 18:50:13  

Additional Information
 Earth MOID = .871052 au 
 Jupiter MOID = 2.42416 au 
 T_jup = 3.532 
[ 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 13.73   n/a E2021B10  
rotation period rot_per 9.93649 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.]

6520 Sugawa (1991 HH)          Discovered 1991-Apr-16 by Otomo, S., Muramatsu, O. at Kiyosato
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1991 HH = 1970 RF = 1984 KU = 1990 BW3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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