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 ]  
46559 (1991 PC1)
Classification: Inner Main-belt Asteroid          SPK-ID: 2046559
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .066742608788653 6.095e-08  
a 1.938690674674501 6.7289e-09 au
q 1.809297401412491 1.1735e-07 au
i 18.52029946275434 6.9775e-06 deg
node 345.7504337932326 1.2148e-05 deg
peri 327.398132385906 3.8333e-05 deg
M 108.9667244086621 3.5455e-05 deg
tp 2458302.063042328625
(2018-Jul-02.56304233)
9.7402e-05 TDB
period 985.964342277268
2.70
5.1332e-06
1.405e-08
d
yr
n .3651247662451089 1.9009e-09 deg/d
Q 2.06808394793651 7.178e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1044  
   data-arc span      23576 days (64.55 yr)  
   first obs. used      1955-03-23  
   last obs. used      2019-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50393  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:27:44  

Additional Information
 Earth MOID = .810847 au 
 Jupiter MOID = 3.12873 au 
 T_jup = 3.839 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO452807  
diameter diameter 1.436 km 0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.168 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Warner, B.D (2011) Minor Planet Bull. 38, 25-31.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.856   0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46559 (1991 PC1)          Discovered 1991-Aug-15 by Helin, E. F. at Palomar
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 PC1 = 2001 CM42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin