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 ]  
2543 Machado (1980 LJ)
Classification: Main-belt Asteroid          SPK-ID: 2002543
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .282646891263666 3.7061e-08  
a 3.096952217512275 1.9e-08 au
q 2.221608300840314 1.1491e-07 au
i 15.04410087954408 4.8151e-06 deg
node 40.89082501179723 1.6463e-05 deg
peri 286.229086456199 1.8725e-05 deg
M 2.251436885445513 9.8768e-06 deg
tp 2458588.050340886611
(2019-Apr-14.55034089)
5.4599e-05 TDB
period 1990.674182249232
5.45
1.8319e-05
5.015e-08
d
yr
n .1808432556216917 1.6642e-09 deg/d
Q 3.972296134184236 2.437e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2073  
   data-arc span      27761 days (76.01 yr)  
   first obs. used      1943-10-29  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45659  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:17:00  

Additional Information
 Earth MOID = 1.26619 au 
 Jupiter MOID = 1.76737 au 
 T_jup = 3.109 
[ 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 11.1   n/a MPO452197  
diameter diameter 14.473 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 31.72 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Oey, J. (2011) http://minorplanet.haoeydental.com.au]
geometric albedo albedo 0.336   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2543 Machado (1980 LJ)          Discovered 1980-Jun-01 by Debehogne, H. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1980 LJ = 1943 UB = 1948 QP = 1959 SL = 1976 YQ6 = 1981 RN1 
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