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 ]  
9397 Lombardi (1994 RJ)
Classification: Main-belt Asteroid          SPK-ID: 2009397
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .147495637579863 6.7232e-08  
a 2.52032469292111 1.0166e-08 au
q 2.148587795430438 1.6972e-07 au
i 3.173229999554494 4.5497e-06 deg
node 216.0909956131961 0.00011343 deg
peri 106.3368656756995 0.0001142 deg
M 65.24265966039162 1.3189e-05 deg
tp 2458335.642469868614
(2018-Aug-05.14246987)
5.3277e-05 TDB
period 1461.447331295486
4.00
8.8428e-06
2.421e-08
d
yr
n .2463311487803543 1.4905e-09 deg/d
Q 2.892061590411782 1.1666e-08 au
  Orbit Determination Parameters
   # obs. used (total)      819  
   data-arc span      9367 days (25.65 yr)  
   first obs. used      1993-03-21  
   last obs. used      2018-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54881  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:01:12  

Additional Information
 Earth MOID = 1.13796 au 
 Jupiter MOID = 2.41397 au 
 T_jup = 3.439 
[ 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 MPO452302  
diameter diameter 1.927 km 0.531 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.396   0.163 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9397 Lombardi           Discovered 1994 Sept. 6 at Santa Lucia Stroncone.
Giuseppe Lombardi (b. 1939) is an Italian amateur astronomer at the CCAF observatory in Farra d´Isonzo. Now retired, he spends most of his sleepless nights at the observatory, where he shows the beauties of the sky to visitors and participates in almost all of the discoveries at this site.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19991123/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1994 RJ = 1993 FG67 
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