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21551 Geyang (1998 QH45)
Classification: Main-belt Asteroid          SPK-ID: 2021551
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04376217421405203 3.508e-08  
a 3.094151658000333 1.7105e-08 au
q 2.958744854098224 1.1625e-07 au
i 9.154232974910538 4.8145e-06 deg
node 197.8900311011496 2.023e-05 deg
peri 285.2207156508206 5.5871e-05 deg
M 294.9149037422635 5.3055e-05 deg
tp 2459755.909764939802
(2022-Jun-25.40976494)
0.00029345 TDB
period 1987.97455666279
5.44
1.6485e-05
4.513e-08
d
yr
n .1810888367728063 1.5017e-09 deg/d
Q 3.229558461902441 1.7854e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1556  
   data-arc span      22033 days (60.32 yr)  
   first obs. used      1960-10-17  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48659  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 15:00:43  

Additional Information
 Earth MOID = 1.99093 au 
 Jupiter MOID = 1.81591 au 
 T_jup = 3.203 
[ 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 13.71   n/a E2021B10  

21551 Geyang           Discovered 1998 Aug. 17 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Ge Yang (b. 1987) was awarded second place in the 2005 Intel International Science and Engineering Fair for his engineering project. He attends the Beijing Jingshan School, Beijing, China.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050822/MPCPages.arcLast Updated: 2005-08-26

[ 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
1928-Apr-25 19:11 00:02 Jupiter 1.87242983025795 1.87242926314755 1.87243039737142 4.13166646733381 4.02068861669693 2425362.299530677 2.21065268966623 169.827787003786 17.6603544427236 84.0920665409146 3620035.20008788 T 36 CATAB v2.0g-lin.ifort 2021-Aug-25 15:00:56 2021-Aug-25 15:00
1938-Apr-13 00:28 00:02 Jupiter 1.95813063992543 1.95812996722212 1.95813131262963 3.05663613131185 2.91168175262954 2429001.519501477 2.11534009744118 91.0638722886714 13.2560513477003 -70.5031704524795 3548556.72912743 T 36 CATAB v2.0g-lin.ifort 2021-Aug-25 15:00:56 2021-Aug-25 15:00
1998-Nov-01 10:31 < 00:01 Jupiter 1.84915642714292 1.84915601894349 1.84915683534236 3.75747279905424 3.63352227010488 2451118.938052490 0.470890866608878 45.7914492564133 17.4925268504622 88.1565341475586 3125809.69379065 T 36 CATAB v2.0g-lin.ifort 2021-Aug-25 15:00:56 2021-Aug-25 15:00
2059-Apr-28 16:50 00:01 Jupiter 1.92522714466088 1.92522673204049 1.92522755728149 4.28966805768833 4.18584907575897 2473212.201701486 1.07545997213562 80.815314703566 16.5700214716704 83.6058365047907 4056700.48893061 T 36 CATAB v2.0g-lin.ifort 2021-Aug-25 15:00:56 2021-Aug-25 15:00
2069-Apr-30 22:38 00:01 Jupiter 1.88673387475426 1.8867334093386 1.88673434017024 3.34708863040291 3.2101605197104 2476867.442991216 1.42495081449285 85.8518418672849 16.5601286573569 -79.2222089622268 2979426.86858595 T 36 CATAB v2.0g-lin.ifort 2021-Aug-25 15:00:56 2021-Aug-25 15:00
2129-Nov-06 02:20 00:03 Jupiter 1.84551802860699 1.84551754367556 1.84551851354157 4.02271262780607 3.90695444450906 2498970.597561428 2.85899361093063 217.980203959148 17.777363809768 87.2740578729273 3424821.58702706 T 36 CATAB v2.0g-lin.ifort 2021-Aug-25 15:00:56 2021-Aug-25 15:00
2139-Oct-23 02:35 00:03 Jupiter 1.97078730317459 1.97078640719926 1.97078819915216 3.08313610006701 2.94043371078369 2502608.607968709 3.3764550177099 125.179844054557 12.8030008407876 -68.0987160207859 3844913.45123485 T 36 CATAB v2.0g-lin.ifort 2021-Aug-25 15:00:56 2021-Aug-25 15:00
2200-May-13 02:19 00:05 Jupiter 1.83625981960453 1.8362592423053 1.83626039691566 3.6893203751635 3.56209670146127 2524725.596572377 4.75276472459134 334.195653810723 17.6189305154398 -84.8520718109549 3079716.45179166 T 36 CATAB v2.0g-lin.ifort 2021-Aug-25 15:00:56 2021-Aug-25 15:00

Alternate Designations
 1998 QH45 = 2000 AD169 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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