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15891 Alissazhang (1997 GG7)
Classification: Main-belt Asteroid          SPK-ID: 2015891
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2004303678318202 5.1307e-08  
a 2.316967293182616 6.4418e-09 au
q 1.852576686355727 1.1961e-07 au
i 4.376708865907159 4.6445e-06 deg
node 181.2255380194954 3.8183e-05 deg
peri 169.7983712778361 3.8993e-05 deg
M 193.876554753361 7.9389e-06 deg
tp 2459990.938199889520
(2023-Feb-15.43819989)
2.8488e-05 TDB
period 1288.18513029579
3.53
5.3723e-06
1.471e-08
d
yr
n .2794629370681663 1.1655e-09 deg/d
Q 2.781357900009505 7.7329e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1512  
   data-arc span      10784 days (29.52 yr)  
   first obs. used      1991-12-03  
   last obs. used      2021-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53966  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:31:38  

Additional Information
 Earth MOID = .846257 au 
 Jupiter MOID = 2.65526 au 
 T_jup = 3.549 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.07   n/a MPCxxxxx  

15891 Alissazhang           Discovered 1997 Apr. 2 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Alissa Yuan Zhang (b. 1994) is a finalist in the 2012 Intel Science Talent Search, a science competition for high-school seniors, for her chemistry project. She attends the Saratoga High School, Saratoga, California.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

Alternate Designations
 1997 GG7 = 1998 WL11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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