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22577 Alfiuccio (1998 HT51)
Classification: Main-belt Asteroid          SPK-ID: 2022577
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1481911498981719 2.4708e-08  
a 2.290534933803304 5.7879e-09 au
q 1.95109792808106 5.741e-08 au
i 3.865897696898489 3.626e-06 deg
node 65.74720615140112 3.96e-05 deg
peri 250.8476456670979 4.1439e-05 deg
M 105.3060981776647 1.2658e-05 deg
tp 2458830.113774382289
(2019-Dec-12.61377438)
4.4257e-05 TDB
period 1266.204365462444
3.47
4.7993e-06
1.314e-08
d
yr
n .2843142938213772 1.0776e-09 deg/d
Q 2.629971939525549 6.6457e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1965  
   data-arc span      8820 days (24.15 yr)  
   first obs. used      1996-12-19  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48402  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:07:47  

Additional Information
 Earth MOID = .93972 au 
 Jupiter MOID = 2.63806 au 
 T_jup = 3.581 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8   n/a MPO337449  
rotation period rot_per 4.370 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

22577 Alfiuccio           Discovered 1998 Apr. 30 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Alfio ("Alfiuccio") Grasso (1992-2004) died tragically at the age of twelve in a hunting accident on the slopes of Mt. Etna. The name was suggested by C. Blanco and M. Di Martino.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090806/MPCPages.arcLast Updated: 2011-05-09

Alternate Designations
 1998 HT51 = 1999 UZ8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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