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 ]  
4450 Pan (1987 SY)
Classification: Apollo [NEO, PHA]          SPK-ID: 2004450
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 170 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5866777702757386 2.2425e-08  
a 1.442268692753672 4.077e-09 au
q .5961217119504434 3.2103e-08 au
i 5.520249885021379 5.1578e-06 deg
node 311.8238901282904 2.2445e-05 deg
peri 291.8180217364242 2.1846e-05 deg
M 134.1212068492094 1.0152e-05 deg
tp 2458364.798338819925
(2018-Sep-03.29833882)
1.6846e-05 TDB
period 632.6560878640581
1.73
2.6826e-06
7.345e-09
d
yr
n .5690295358026413 2.4128e-09 deg/d
Q 2.288415673556901 6.4688e-09 au
  Orbit Determination Parameters
   # obs. used (total)      927  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      30224 days (82.75 yr)  
   first obs. used      1937-02-06  
   last obs. used      2019-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46307  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-09 05:20:58  

Additional Information
 Earth MOID = .0285148 au 
 Jupiter MOID = 2.76766 au 
 T_jup = 4.457 
[ 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 17.1   n/a MPO267725  
rotation period rot_per 56.48 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2014) Minor Planet Bull. 41, 113-124.]

4450 Pan (1987 SY)          Discovered 1987-Sep-25 by Shoemaker, C. and E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1987 SY = 1937 CA 
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