Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2001019907681382 5.3726e-08  
a 2.316805253527258 6.9399e-09 au
q 1.853207910074372 1.2563e-07 au
i 4.375958283661745 5.2795e-06 deg
node 181.242383994309 4.3147e-05 deg
peri 169.6932997256341 4.4308e-05 deg
M 331.5396749954074 9.4591e-06 deg
tp 2458702.328670911258
(2019-Aug-06.82867091)
3.3726e-05 TDB
period 1288.049996693198
3.53
5.7875e-06
1.585e-08
d
yr
n .2794922564529526 1.2558e-09 deg/d
Q 2.780402596980144 8.3286e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1251  
   data-arc span      10223 days (27.99 yr)  
   first obs. used      1991-12-03  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55102  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:04:54  

Additional Information
 Earth MOID = .846788 au 
 Jupiter MOID = 2.65156 au 
 T_jup = 3.550 
[ 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 15.0   n/a MPO502291  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-25 08:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin