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JPL Small-Body Database Browser
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108140 Alir (2001 HO)
Classification: Main-belt Asteroid          SPK-ID: 2108140
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2086196985477798 3.3082e-08  
a 2.632789298104226 1.7765e-08 au
q 2.083537588393902 8.9659e-08 au
i 4.444763088001636 7.668e-06 deg
node 196.7443070936686 5.8814e-05 deg
peri 291.6520801727066 6.319e-05 deg
M 138.4814882849486 2.2667e-05 deg
tp 2458000.278145484231
(2017-Sep-03.77814548)
9.5021e-05 TDB
period 1560.352003013261
4.27
1.5793e-05
4.324e-08
d
yr
n .2307171710644707 2.3352e-09 deg/d
Q 3.182041007814551 2.1472e-08 au
  Orbit Determination Parameters
   # obs. used (total)      474  
   data-arc span      6798 days (18.61 yr)  
   first obs. used      1999-11-04  
   last obs. used      2018-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51871  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 14:44:02  

Additional Information
 Earth MOID = 1.10368 au 
 Jupiter MOID = 1.90754 au 
 T_jup = 3.364 
[ 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 15.9   n/a MPO436519  

108140 Alir           Discovered 2001 Apr. 16 at the Saint-Véran Observatory.
The name Alir comprises the two first letters of Alphonse (b. 1927) and Irène (b. 1935) Hernandez, the parents of one of the discoverers of this minor planet.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060809/MPCPages.arcLast Updated: 2007-08-08

[ show close-approach data ]
Alternate Designations
 2001 HO = 2005 EH71 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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