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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
(2021 RH12)
Classification: Apollo [NEO]          SPK-ID: 54195883
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2008705044610117 0.00022985  
a 1.119910945347592 0.00020449 au
q .8949538688042128 9.4017e-05 au
i 4.087704960897391 0.0044826 deg
node 174.5906718240704 0.0019735 deg
peri 250.9838930578489 0.0043132 deg
M 244.1340365535102 0.04455 deg
tp 2459535.824353702822
(2021-Nov-17.32435370)
0.015559 TDB
period 432.8861197980689
1.19
0.11857
0.0003246
d
yr
n .831627496321507 0.00022778 deg/d
Q 1.344868021890972 0.00024557 au
  Orbit Determination Parameters
   # obs. used (total)      16  
   data-arc span      2 days  
   first obs. used      2021-09-11  
   last obs. used      2021-09-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .30317  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Sep-12 23:42:02  

Additional Information
 Earth MOID = .00140396 au 
 Jupiter MOID = 3.89258 au 
 T_jup = 5.553 
[ 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 28.548   .2337 1 autocmod 2.9e

[ 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-Sep-17 11:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin