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 ]  
22893 (1999 SD18)
Classification: Main-belt Asteroid          SPK-ID: 2022893
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2278266217124368 5.5819e-08  
a 2.534981524012037 8.9198e-09 au
q 1.95744524729293 1.432e-07 au
i 7.291108547238261 4.6687e-06 deg
node 94.88082354784332 3.4337e-05 deg
peri 238.2196465073775 3.512e-05 deg
M 108.7396012744327 7.7977e-06 deg
tp 2458755.207008440362
(2019-Sep-28.70700844)
3.0893e-05 TDB
period 1474.214316428263
4.04
7.7809e-06
2.13e-08
d
yr
n .2441978727165061 1.2889e-09 deg/d
Q 3.112517800731144 1.0952e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1168  
   data-arc span      9321 days (25.52 yr)  
   first obs. used      1995-08-05  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53081  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:14:26  

Additional Information
 Earth MOID = .956517 au 
 Jupiter MOID = 2.28056 au 
 T_jup = 3.401 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO435914  

22893 (1999 SD18)          Discovered 1999-Sep-30 by LINEAR at Socorro
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 SD18 = 1998 HU34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-22 03:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin