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20667 (1999 UM11)
Classification: Main-belt Asteroid          SPK-ID: 2020667
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1226480413102095 3.0615e-08  
a 3.196250063351904 1.7842e-08 au
q 2.80423625354416 9.6002e-08 au
i 1.679634082024871 4.114e-06 deg
node 61.10517316007093 0.00014798 deg
peri 26.40751269371755 0.00014957 deg
M 222.6325106722164 2.1039e-05 deg
tp 2459996.917897716110
(2023-Feb-21.41789772)
0.00012296 TDB
period 2087.178302383154
5.71
1.7476e-05
4.785e-08
d
yr
n .1724816703915279 1.4442e-09 deg/d
Q 3.588263873159648 2.003e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1558  
   data-arc span      10705 days (29.31 yr)  
   first obs. used      1990-03-01  
   last obs. used      2019-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51179  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:26:17  

Additional Information
 Earth MOID = 1.82043 au 
 Jupiter MOID = 1.6097 au 
 T_jup = 3.183 
[ 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 13.7   n/a MPO350966  
diameter diameter 8.288 km 0.328 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 10.71 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:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) Ap. J. Supp. Ser. 241, A6.]
geometric albedo albedo 0.078   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20667 (1999 UM11)          Discovered 1999-Oct-27 by Korlevic, K. at Visnjan
Reference: 20010109/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
1901-Dec-27 11:47 00:03 Jupiter 1.62332129547297 1.62332095767185 1.62332163327382 1.81390035668517 1.49888865611214 2415745.990786817 2.65168817842281 91.0992946218033 29.6014099199163 -79.3898702506372 2643375.12344722 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:24 2021-Apr-13 03:26
1912-Oct-17 22:25 00:02 Jupiter 1.71112414197906 1.71112344405648 1.71112483990116 1.90794013043885 1.62794863833586 2419693.434113663 2.2781305692411 52.3148161241908 12.6556460481397 87.4956325010619 1974489.35336803 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:24 2021-Apr-13 03:26
1923-Aug-09 11:56 00:02 Jupiter 1.93516101734635 1.93516016743921 1.93516186725371 2.60354077251298 2.42961353622382 2423640.997530147 1.94958819238089 70.2893728940769 12.9632208867274 74.1712818619711 2565822.86867141 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:24 2021-Apr-13 03:26
2010-Apr-10 13:27 < 00:01 Jupiter 1.75861873227569 1.75861821301896 1.75861925153232 2.72794630167183 2.54527197953383 2455297.060444158 0.259801810184991 41.9851181276198 12.485597797863 -89.8914955533033 2369126.64626537 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:24 2021-Apr-13 03:26
2021-Jan-15 13:35 < 00:01 Jupiter 1.61606204922492 1.61606166946929 1.61606242898029 1.88223414674354 1.57941458957365 2459230.065944114 0.376645194536746 59.3490194011839 21.1082502668139 87.934571575953 2517121.74769227 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:24 2021-Apr-13 03:26
2031-Nov-05 08:01 < 00:01 Jupiter 1.6631435987307 1.66314321214641 1.6631439853148 1.81470515737808 1.50816931365876 2463175.833711127 0.668595950346276 59.2722298804372 18.9975606856244 86.118899497247 2978869.40920345 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:24 2021-Apr-13 03:26
2042-Aug-26 07:36 < 00:01 Jupiter 1.87106849190568 1.87106776940962 1.87106921440164 2.40573661301953 2.20956546608283 2467122.816916588 0.995176479420831 49.6138119657454 12.5278502014303 79.1125569131453 2221958.84655435 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:24 2021-Apr-13 03:26
2129-May-10 12:08 00:03 Jupiter 1.80950419642644 1.8095027217331 1.80950567112133 3.03705445434818 2.87880302139501 2498791.005769767 3.07876604776049 128.220873963871 19.8685041812238 71.5640797203576 1968689.44885291 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:24 2021-Apr-13 03:26
2140-Feb-12 14:59 00:03 Jupiter 1.62201969013551 1.62201890372479 1.62202047654678 2.00445832924246 1.724369007048 2502721.124564279 3.3142067654939 123.605133811802 20.4508438038402 -74.4555692654826 1721753.79444717 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:24 2021-Apr-13 03:26
2150-Nov-30 05:30 00:04 Jupiter 1.61906497167116 1.61906424501433 1.61906569832872 1.74923759625757 1.41898606645494 2506664.728824016 3.56122750358804 107.270044106403 27.2651698075007 -87.9288017771378 2870726.55036427 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:24 2021-Apr-13 03:26
2161-Sep-20 02:21 00:04 Jupiter 1.80083991065073 1.80083808651383 1.80084173478589 2.20706553901321 1.98253401366628 2510611.598244149 3.92415072273375 66.7672202069356 19.1569752920062 71.0754721158324 1052152.65470714 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:24 2021-Apr-13 03:26

Alternate Designations
 1999 UM11 = 1990 EY5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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