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 ]  
452257 (2015 TW121)
Classification: Main-belt Asteroid          SPK-ID: 2452257
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04461171004386944 7.1882e-08  
a 2.723473671540583 3.9667e-08 au
q 2.601974853793702 2.1456e-07 au
i 11.58924956937118 7.3814e-06 deg
node 164.7430977835837 3.0403e-05 deg
peri 243.5418909309652 8.4148e-05 deg
M 357.4357461603524 7.7754e-05 deg
tp 2459012.193424405058
(2020-Jun-11.69342441)
0.00035463 TDB
period 1641.659932699818
4.49
3.5866e-05
9.82e-08
d
yr
n .2192902396100734 4.7909e-09 deg/d
Q 2.844972489287463 4.1437e-08 au
  Orbit Determination Parameters
   # obs. used (total)      132  
   data-arc span      6614 days (18.11 yr)  
   first obs. used      2001-08-24  
   last obs. used      2019-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61929  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 16:48:17  

Additional Information
 Earth MOID = 1.62869 au 
 Jupiter MOID = 2.31638 au 
 T_jup = 3.327 
[ 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 16.8   n/a MPO450473  

452257 (2015 TW121)          Discovered 2008-Feb-11 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-11-30

Alternate Designations
 2015 TW121 = 2010 RZ168 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-19 03:05 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin