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
JPL Small-Body Database Browser
Search: [ help ]  
19538 (1999 JD12)
Classification: Main-belt Asteroid          SPK-ID: 2019538
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2699248075012263 3.0861e-08  
a 2.398791322678857 8.4053e-09 au
q 1.751298036669154 7.3415e-08 au
i 22.93158802867366 5.2862e-06 deg
node 176.8194973803345 9.0166e-06 deg
peri 105.4477486199817 1.3153e-05 deg
M 272.640398611874 1.1113e-05 deg
tp 2459529.802686357788
(2021-Nov-11.30268636)
4.2968e-05 TDB
period 1357.022756572662
3.72
7.1325e-06
1.953e-08
d
yr
n .2652866344771012 1.3943e-09 deg/d
Q 3.046284608688559 1.0674e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1838  
   data-arc span      14974 days (41.00 yr)  
   first obs. used      1980-03-16  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43681  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:57:21  

Additional Information
 Earth MOID = .869994 au 
 Jupiter MOID = 2.56885 au 
 T_jup = 3.373 
[ 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 14.22   n/a E2021B10  
diameter diameter 3.701 km 0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.5641 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.448   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19538 (1999 JD12)          Discovered 1999-May-13 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JD12 = 1980 FC5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-21 03:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin