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 ]  
(2018 TW1)
Classification: Apollo [NEO]          SPK-ID: 3831214
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4712186468403292 0.0004845  
a 1.898610748078354 0.0017432 au
q 1.003949960492367 2.0455e-06 au
i 8.659498977693826 0.0063599 deg
node 192.824029561542 0.00034301 deg
peri 191.6710780757214 0.0030665 deg
M 298.8490472015028 0.41061 deg
tp 2459362.812907367281
(2021-May-28.31290737)
1.3134 TDB
period 955.547607651622
2.62
1.316
0.003603
d
yr
n .3767473196701785 0.00051887 deg/d
Q 2.793271535664342 0.0025647 au
  Orbit Determination Parameters
   # obs. used (total)      43  
   data-arc span      2 days  
   first obs. used      2018-10-05  
   last obs. used      2018-10-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .51366  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:43:16  

Additional Information
 Earth MOID = .00967694 au 
 Jupiter MOID = 2.66462 au 
 T_jup = 3.794 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 27.8   .34321 MPO458800 autocmod 2.6n

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-09 21:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin