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 ]  
27939 (1997 LL2)
Classification: Main-belt Asteroid          SPK-ID: 2027939
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1531780823612625 4.0964e-08  
a 2.304135744429153 7.4432e-09 au
q 1.951192649597455 9.5064e-08 au
i 5.963671673410591 3.9273e-06 deg
node 208.325922108085 3.8856e-05 deg
peri 135.0100161328991 4.0434e-05 deg
M 11.16331763900171 1.1233e-05 deg
tp 2458560.885762567361
(2019-Mar-18.38576257)
3.9812e-05 TDB
period 1277.498852664143
3.50
6.1902e-06
1.695e-08
d
yr
n .2818006444774826 1.3655e-09 deg/d
Q 2.657078839260851 8.5833e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1254  
   data-arc span      8718 days (23.87 yr)  
   first obs. used      1996-01-15  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53456  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 01:09:47  

Additional Information
 Earth MOID = .948423 au 
 Jupiter MOID = 2.75765 au 
 T_jup = 3.566 
[ 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 15.0   n/a MPO347730  
diameter diameter 2.983 km 0.586 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.239   0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27939 (1997 LL2)          Discovered 1997-Jun-05 by Spacewatch at Kitt Peak
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 LL2 = 1996 AF12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-14 08:19 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin