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21555 Levary (1998 QF70)
Classification: Outer Main-belt Asteroid          SPK-ID: 2021555
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08305525556119749 3.3145e-08  
a 3.200695575746928 2.1018e-08 au
q 2.934860986729673 1.0279e-07 au
i 15.67892475807024 4.5436e-06 deg
node 211.8785490646509 1.408e-05 deg
peri 246.8985241425162 3.2117e-05 deg
M 249.325398929337 3.035e-05 deg
tp 2460039.499219309354
(2023-Apr-04.99921931)
0.00017743 TDB
period 2091.53425187025
5.73
2.0602e-05
5.641e-08
d
yr
n .1721224501478223 1.6954e-09 deg/d
Q 3.466530164764183 2.2764e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1894  
   data-arc span      12374 days (33.88 yr)  
   first obs. used      1987-09-23  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45737  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:43:36  

Additional Information
 Earth MOID = 1.99205 au 
 Jupiter MOID = 1.84556 au 
 T_jup = 3.131 
[ 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 12.68   n/a MPCxxxxx  
diameter diameter 18.887 km 0.099 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21555 Levary           Discovered 1998 Aug. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
David Andrew Levary (b. 1990) was awarded second place in the 2006 Intel International Science and Engineering Fair for his botany project. He attends the Parkway Central High School, Chesterfield, Missouri, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060711/MPCPages.arcLast Updated: 2006-07-17

[ 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
1988-Jan-24 21:18 < 00:01 Jupiter 1.96399050920661 1.96399001931154 1.96399099910202 5.9012982620137 5.82775845647866 2447185.387340798 0.701170310303887 82.5290705501781 19.7768367533735 80.6265968642167 4683021.8055589 T 32 CATAB v2.0g-lin.ifort 2021-Aug-24 22:43:42 2021-Aug-24 22:43
1999-Jan-30 00:17 < 00:01 Jupiter 1.89283248121325 1.89283204013743 1.89283292228907 5.05852515907127 4.9692753941487 2451208.511469075 0.467258906781974 64.1161870909736 20.8467984121071 89.1946279019799 3464686.59228365 T 32 CATAB v2.0g-lin.ifort 2021-Aug-24 22:43:42 2021-Aug-24 22:43
2010-Jan-09 05:28 < 00:01 Jupiter 1.96741369158377 1.96741315498011 1.96741422818744 3.53142591290959 3.40733285989623 2455205.727542846 0.315785078655463 55.0819175170347 23.3526388231043 -83.8917770013372 2448135.29343055 T 32 CATAB v2.0g-lin.ifort 2021-Aug-24 22:43:42 2021-Aug-24 22:43
2130-Aug-15 09:25 00:03 Jupiter 1.99165834896305 1.99165693324354 1.99165976469558 5.91764989188855 5.84534089274524 2499252.892503580 2.74018210346228 277.039592763989 20.6287950136941 76.1555282753529 4701749.85822455 T 32 CATAB v2.0g-lin.ifort 2021-Aug-24 22:43:42 2021-Aug-24 22:43
2141-Aug-23 05:58 00:03 Jupiter 1.85949108057376 1.85949059637303 1.85949156477955 5.27909389426794 5.19209073327662 2503278.748394591 2.97404343800978 332.809244482931 20.3255035132767 88.684995766365 3687797.67537637 T 32 CATAB v2.0g-lin.ifort 2021-Aug-24 22:43:42 2021-Aug-24 22:43
2152-Aug-19 00:36 00:04 Jupiter 1.9078259859084 1.90782497477138 1.9078269970567 4.07715609766738 3.96676903721623 2507292.525049570 3.61558921341219 271.734753384488 23.3419538205575 -77.2678184451067 2255563.22345312 T 32 CATAB v2.0g-lin.ifort 2021-Aug-24 22:43:42 2021-Aug-24 22:43

Alternate Designations
 1998 QF70 = 1987 SK24 = 1996 FJ16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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