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 ]  
19907 (4220 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2019907
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1196643272324951 5.8712e-08  
a 3.156773380935652 2.3906e-08 au
q 2.779020218080539 1.7744e-07 au
i 22.16965253768378 6.5087e-06 deg
node 30.65119256674789 1.2443e-05 deg
peri 45.48694024713093 2.9395e-05 deg
M 219.5199574902612 2.5404e-05 deg
tp 2459999.921206555946
(2023-Feb-24.42120656)
0.00014679 TDB
period 2048.630034691151
5.61
2.3272e-05
6.372e-08
d
yr
n .175727190319297 1.9962e-09 deg/d
Q 3.534526543790766 2.6767e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1166  
   data-arc span      15244 days (41.74 yr)  
   first obs. used      1977-10-07  
   last obs. used      2019-07-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51536  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:08:53  

Additional Information
 Earth MOID = 1.82816 au 
 Jupiter MOID = 2.01598 au 
 T_jup = 3.081 
[ 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 13.6   n/a MPO474027  
diameter diameter 11.912 km 0.238 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.327 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.050   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19907 (4220 T-3)          Discovered 1977-Oct-16 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 4220 T-3 = 1991 GU10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-17 18:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin