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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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06163769003647838 3.969e-08  
a 2.325614520801796 7.5082e-09 au
q 2.182269013824282 9.2827e-08 au
i 7.597128092522413 3.539e-06 deg
node 114.9151358416469 3.1657e-05 deg
peri 96.06954737148422 4.3779e-05 deg
M 343.7718126621954 3.0483e-05 deg
tp 2459058.894579350419
0.00010968 TDB
period 1295.403369985665
n .2779057151935492 1.3458e-09 deg/d
Q 2.46896002777931 7.971e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1733  
   data-arc span      8791 days (24.07 yr)  
   first obs. used      1996-06-22  
   last obs. used      2020-07-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49693  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:18:04  

Additional Information
 Earth MOID = 1.19135 au 
 Jupiter MOID = 2.51969 au 
 T_jup = 3.560 
[ 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 14.55   n/a E2021B10  
rotation period rot_per 208.857 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
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
2139-Apr-16 22:44 00:03 Vesta 0.0395806073023007 0.0395658943331719 0.0395953222415974 1.52676959142814 1.52676762245897 2502419.447377128 3.33096383267081 844.29180066838 39.7769748472958 31.2173159931 75239.9699420131 T 31 CATAB v2.0f-lin.ifort 2020-Nov-13 02:18:08 2020-Nov-13 02:18

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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