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9077 Ildo (1994 NC)
Classification: Main-belt Asteroid          SPK-ID: 2009077
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1759884468890882 2.657e-08  
a 2.691023621550073 1.0988e-08 au
q 2.217434553851626 7.1727e-08 au
i 11.96280332809874 1.2919e-06 deg
node 165.5055249000531 1.0693e-05 deg
peri 237.0965588360586 1.0059e-05 deg
M 276.4500651767827 8.2225e-06 deg
tp 2459574.712513917909
(2021-Dec-26.21251392)
3.8004e-05 TDB
period 1612.407062859987
4.41
9.8753e-06
2.704e-08
d
yr
n .2232686821412543 1.3674e-09 deg/d
Q 3.16461268924852 1.2921e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1909  
   data-arc span      14294 days (39.13 yr)  
   first obs. used      1981-08-30  
   last obs. used      2020-10-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48958  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 21:07:16  

Additional Information
 Earth MOID = 1.24829 au 
 Jupiter MOID = 2.35286 au 
 T_jup = 3.319 
[ 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 13.3   n/a MPO473890  
diameter diameter 4.872 km 0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 15.323 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.]
geometric albedo albedo 0.428   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9077 Ildo           Discovered 1994 July 3 at Farra d´Isonzo.
Named in memory of Ildo Lombardi (1934-1954), Italian gymnast and brother of Giuseppe Lombardi, a member of the team of amateur astronomers who discovered this minor planet. Ildo died by a fall from the parallel bars while training with the Italian team for the Melbourne Olympic games in 1956.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990202/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1994 NC = 1981 QA4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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