Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2098242288533106 3.1848e-08  
a 2.63017526017484 1.7541e-08 au
q 2.078300764459598 8.7123e-08 au
i 4.446316399181695 6.7286e-06 deg
node 196.6829173023111 4.3223e-05 deg
peri 291.6986761813113 4.7658e-05 deg
M 230.8629393682846 2.1803e-05 deg
tp 2459559.386804182579
(2021-Dec-10.88680418)		 9.85e-05 TDB
period 1558.028721743375
4.27		 1.5586e-05
4.267e-08		 d
yr
n .231061208934052 2.3115e-09 deg/d
Q 3.182049755890081 2.1222e-08 au
   Orbit Determination Parameters
   # obs. used (total)      558  
   data-arc span      7677 days (21.02 yr)  
   first obs. used      1999-11-04  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49083  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:32:43  

Additional Information
 Earth MOID = 1.09807 au 
 Jupiter MOID = 1.90629 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)		 Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1925-Oct-20 18:12 00:03 Jupiter 1.99757741557309 1.99757621764402 1.99757861350148 1.63808504297505 1.35472242771292 2424444.258234675 2.64850459500724 127.982224938372 57.6838150292753 56.4936798096753 1535966.95768716 T 19 CATAB v2.0f-lin.ifort 2020-Dec-18 04:32:44 2020-Dec-18 04:32
1985-Nov-20 05:53 < 00:01 Jupiter 1.90670196200927 1.90670156709122 1.906702356927 1.53871686948348 1.21621580935167 2446389.745182601 0.946735903376175 116.497949098665 98.7769649386695 89.8623952223953 1694674.6123976 T 19 CATAB v2.0f-lin.ifort 2020-Dec-18 04:32:44 2020-Dec-18 04:32
2045-Dec-19 21:41 < 00:01 Jupiter 1.96827606165801 1.96827554214575 1.96827658117004 2.17145125124614 1.96329468705336 2468334.403613989 0.790741118510938 76.4440043796965 21.8209792910449 84.8941964601082 1623837.13069616 T 19 CATAB v2.0f-lin.ifort 2020-Dec-18 04:32:44 2020-Dec-18 04:32
2092-Jun-27 17:02 00:02 Jupiter 1.90795566875095 1.90795515838335 1.90795617911962 1.48860491193095 1.15241471788976 2485326.209922523 2.0986796540335 131.768689318279 97.4201482152364 -89.7924522054097 2200526.67148599 T 19 CATAB v2.0f-lin.ifort 2020-Dec-18 04:32:44 2020-Dec-18 04:32
2152-Jul-27 16:16 00:04 Jupiter 1.92738471551428 1.92738385043901 1.9273855805958 1.95186184365662 1.71196673433023 2507270.177966434 3.8000219054543 268.046783008504 49.0933815423773 -75.6920204960637 1239101.42127182 T 19 CATAB v2.0f-lin.ifort 2020-Dec-18 04:32:44 2020-Dec-18 04:32
2199-Feb-02 12:38 00:05 Jupiter 1.92517025903975 1.92516883833816 1.92517167974506 1.49616187181307 1.16557058195036 2524261.026460059 5.12323395138908 200.420041258122 73.3083961798335 85.3690444158675 2451860.52246326 T 19 CATAB v2.0f-lin.ifort 2020-Dec-18 04:32:44 2020-Dec-18 04:32

Alternate Designations
 2001 HO = 2005 EH71 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-26 16:56 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin