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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
48453 (1991 PT9)
Classification: Main-belt Asteroid          SPK-ID: 2048453
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2178794385668085 5.4896e-08  
a 2.286487190871357 9.0306e-09 au
q 1.788308645434107 1.2403e-07 au
i 24.75822770727686 5.3877e-06 deg
node 286.8422926176817 1.2887e-05 deg
peri 357.8591434894956 2.0591e-05 deg
M 19.35480809945979 1.9745e-05 deg
tp 2458532.604974628322
(2019-Feb-18.10497463)
6.9119e-05 TDB
period 1262.8494691449
3.46
7.4815e-06
2.048e-08
d
yr
n .2850696055197799 1.6888e-09 deg/d
Q 2.784665736308608 1.0998e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1470  
   data-arc span      10331 days (28.28 yr)  
   first obs. used      1991-07-18  
   last obs. used      2019-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39651  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:37:08  

Additional Information
 Earth MOID = .771393 au 
 Jupiter MOID = 2.40513 au 
 T_jup = 3.451 
[ 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 13.6   n/a MPO344663  
diameter diameter 4.250 km 0.383 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.427   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48453 (1991 PT9)          Discovered 1991-Aug-13 by Helin, E. F. at Palomar
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 PT9 = 1998 OL1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin