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JPL Small-Body Database Browser
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11221 (1999 JO26)
Classification: Outer Main-belt Asteroid          SPK-ID: 2011221
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1110898942257466 4.1017e-08  
a 3.220104599608838 2.1002e-08 au
q 2.862383520242453 1.312e-07 au
i 12.5426419715623 5.2108e-06 deg
node 49.56487820622507 2.1274e-05 deg
peri 263.8896129578552 3.3229e-05 deg
M 154.0653952664676 2.7154e-05 deg
tp 2458097.254103006759
(2017-Dec-09.75410301)
0.00015831 TDB
period 2110.58766542067
5.78
2.0648e-05
5.653e-08
d
yr
n .1705686079276157 1.6687e-09 deg/d
Q 3.577825678975224 2.3335e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1819  
   data-arc span      15981 days (43.75 yr)  
   first obs. used      1976-05-02  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47546  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:58:38  

Additional Information
 Earth MOID = 1.88456 au 
 Jupiter MOID = 1.75022 au 
 T_jup = 3.142 
[ 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 11.9   n/a MPO250323  
diameter diameter 21.635 km 0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 15.798 h n/a LCDB (Rev. 2019-August); 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 0.039   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11221 (1999 JO26)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 19990728/Numbers.arcLast Updated: 2004-04-19

[ 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
2015-Jan-31 09:13 < 00:01 Jupiter 1.97057866005511 1.97057799341306 1.97057932669728 2.11828187352442 1.90458637913717 2457053.883775287 0.321036320448393 71.6245439645812 15.0698497105919 -71.5031709462064 2549850.06515295 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 19:58:50 2020-Feb-22 19:58
2026-Mar-16 19:38 < 00:01 Jupiter 1.88215965222468 1.88215901461523 1.88216028983456 2.32160590182879 2.11891484457256 2461116.318059372 0.562968239263943 69.0587495272755 8.90265151676168 -60.6266606790841 2478099.03003206 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 19:58:50 2020-Feb-22 19:58
2037-May-12 22:31 < 00:01 Jupiter 1.80848273310983 1.80848219615923 1.80848327006104 3.07883044255462 2.92275130445201 2465191.438394080 0.886633908373907 80.6783161885883 10.4736430175091 -73.7413163487553 2282288.69301942 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 19:58:50 2020-Feb-22 19:58
2048-Jul-16 19:34 00:01 Jupiter 1.78689186678569 1.7868913695731 1.78689236399828 3.84691709379921 3.72165703544802 2469274.315087135 1.21666485459789 87.0922487586505 18.6714599328992 -83.8536420450637 2395547.28940108 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 19:58:50 2020-Feb-22 19:58
2059-Sep-16 11:42 00:02 Jupiter 1.85551762535128 1.85551686356931 1.85551838713346 4.51695990646699 4.41474231793913 2473352.987231671 1.57594082588583 86.7370941207388 30.3679858200125 -77.9499943891283 2275402.15850598 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 19:58:50 2020-Feb-22 19:58
2193-Apr-05 16:11 00:05 Jupiter 1.97057243742566 1.97057155483624 1.97057332002146 2.24148864532208 2.04073511567709 2522132.174146002 4.64277212909794 261.258034713868 29.6218209015427 81.8540772268475 2041992.06578466 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 19:58:50 2020-Feb-22 19:58

Alternate Designations
 1999 JO26 = 1976 JV1 = 1978 TW8 = 1982 KU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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