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
JPL Small-Body Database Browser
Search: [ help ]  
16807 Terasako (1997 TW25)
Classification: Main-belt Asteroid          SPK-ID: 2016807
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .104411393287752 3.0014e-08  
a 2.280310136832475 6.6071e-09 au
q 2.042219778317611 6.7808e-08 au
i 4.312676346838094 3.0596e-06 deg
node 128.4383791457622 4.7199e-05 deg
peri 339.1392349578462 5.0219e-05 deg
M 185.8325797655398 1.8029e-05 deg
tp 2459808.990387597105
(2022-Aug-17.49038760)
6.4203e-05 TDB
period 1257.735455001108
3.44
5.4664e-06
1.497e-08
d
yr
n .2862287125393018 1.244e-09 deg/d
Q 2.518400495347338 7.297e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1425  
   data-arc span      10900 days (29.84 yr)  
   first obs. used      1990-09-14  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51849  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:42:35  

Additional Information
 Earth MOID = 1.05948 au 
 Jupiter MOID = 2.56867 au 
 T_jup = 3.595 
[ 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 15.29   n/a E2021B10  

16807 Terasako           Discovered 1997 Oct. 12 by A. Nakamura at Kuma Kogen.
Masanori Terasako (b. 1951) is a renowned amateur astronomer in Japan. Terasako started his visual comet searching in 1971, and after sweeping for 1374 hours he discovered C/1987 B2. He is also famous for his telescopic meteor observations.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010804/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1997 TW25 = 1990 RZ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-15 05:25 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin