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JPL Small-Body Database Browser
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17921 Aldeobaldia (1999 GC13)
Classification: Main-belt Asteroid          SPK-ID: 2017921
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06163768382314194 4.1178e-08  
a 2.325614519683858 8.3775e-09 au
q 2.182269027225076 9.5417e-08 au
i 7.597126179040675 3.8766e-06 deg
node 114.9151505650477 3.2975e-05 deg
peri 96.06953036856805 4.6238e-05 deg
M 343.7718158237728 3.3969e-05 deg
tp 2459058.894567931874
(2020-Jul-28.39456793)
0.00012229 TDB
period 1295.403369051601
3.55
6.9996e-06
1.916e-08
d
yr
n .2779057153939359 1.5016e-09 deg/d
Q 2.468960012142639 8.8938e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1398  
   data-arc span      8627 days (23.62 yr)  
   first obs. used      1996-06-22  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52806  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:15:12  

Additional Information
 Earth MOID = 1.19135 au 
 Jupiter MOID = 2.51969 au 
 T_jup = 3.560 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456735.5 (2014-Mar-19.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06202046426234067 4.108e-08  
q 2.181845186135311 9.5244e-08 au
tp 2456468.666293626311
(2013-Jun-25.16629363)
0.00012041 TDB
node 114.9577944341247 3.2962e-05 deg
peri 96.35620082538485 4.6151e-05 deg
i 7.598192209106872 3.8774e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1398  
   data-arc span      8627 days (23.62 yr)  
   first obs. used      1996-06-22  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52806  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:15:12  

Additional Information
 Jupiter MOID = 2.51969 au 
 T_jup = 3.560 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.687605514767218E-15 -3.899471248539363E-15 -6.884828050379961E-13 -2.980103228169123E-16 -1.687892701848415E-13 2.221901547931105E-15
q -3.899471248539363E-15 9.071383968921501E-15 1.646366813735825E-12 1.335281492573577E-15 4.049336357261567E-13 -5.007868778707238E-15
tp -6.884828050379961E-13 1.646366813735825E-12 1.449959806964406E-8 1.855877931060456E-11 3.910012490043951E-9 -1.432296240934803E-12
node -2.980103228169123E-16 1.335281492573577E-15 1.855877931060456E-11 1.086472361528248E-9 -1.07138169639369E-9 6.795144570761267E-12
peri -1.687892701848415E-13 4.049336357261567E-13 3.910012490043951E-9 -1.07138169639369E-9 2.129914273566953E-9 -7.091668008617479E-12
i 2.221901547931105E-15 -5.007868778707238E-15 -1.432296240934803E-12 6.795144570761267E-12 -7.091668008617479E-12 1.503422799982006E-11

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 14.5   n/a MPO350945  

17921 Aldeobaldia           Discovered 1999 Apr. 15 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Anna Lisa De Obaldia (b. 1985) was awarded third place in the 2003 Intel International Science and Engineering Fair for her microbiology project. She also received the Intel Foundation Achievement Award. She attends the Moorestown High School, Moorestown, New Jersey, 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: 20040614/MPCPages.arcLast Updated: 2009-12-11

[ show close-approach data ]
Alternate Designations
 1999 GC13 = 1996 MW1 = 1997 WD57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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