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 ]  
46484 (2245 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2046484
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1752287235887299 3.241e-08  
a 2.376797742266477 7.327e-09 au
q 1.960314507660548 7.8929e-08 au
i 2.454158867545282 4.1355e-06 deg
node 186.1475730260318 8.0059e-05 deg
peri 92.69597882418661 8.1045e-05 deg
M 333.0571571849313 1.1797e-05 deg
tp 2459100.667695637497
(2020-Sep-08.16769564)
4.3852e-05 TDB
period 1338.402583462019
3.66
6.1889e-06
1.694e-08
d
yr
n .2689773648439884 1.2438e-09 deg/d
Q 2.793280976872408 8.6109e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1036  
   data-arc span      17072 days (46.74 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52272  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:40:47  

Additional Information
 Earth MOID = .945786 au 
 Jupiter MOID = 2.33587 au 
 T_jup = 3.519 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457030.5 (2015-Jan-08.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1758107754111535 3.2469e-08  
q 1.958613946906582 7.9102e-08 au
tp 2456422.559648158864
(2013-May-10.05964816)
4.5205e-05 TDB
node 186.2213590444146 8.0202e-05 deg
peri 92.39997130457407 8.1169e-05 deg
i 2.451181165506017 4.1333e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1036  
   data-arc span      17072 days (46.74 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52272  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:40:47  

Additional Information
 Jupiter MOID = 2.33587 au 
 T_jup = 3.519 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.054206891337412E-15 -2.561415220053527E-15 -3.220444497901126E-13 9.988815109736048E-15 -8.083172723355106E-14 -9.481493687298343E-16
q -2.561415220053527E-15 6.25710905452728E-15 6.929124469683385E-13 -2.358474224910026E-14 1.768246954258322E-13 2.352788037644624E-15
tp -3.220444497901126E-13 6.929124469683385E-13 2.043481617152068E-9 -8.114201498279552E-12 5.723130142459486E-10 1.381856461984466E-12
node 9.988815109736048E-15 -2.358474224910026E-14 -8.114201498279552E-12 6.432388201659646E-9 -6.428387650905441E-9 9.248287783366858E-11
peri -8.083172723355106E-14 1.768246954258322E-13 5.723130142459486E-10 -6.428387650905441E-9 6.588452925656296E-9 -9.202416813026033E-11
i -9.481493687298343E-16 2.352788037644624E-15 1.381856461984466E-12 9.248287783366858E-11 -9.202416813026033E-11 1.70843131340158E-11

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 15.7   n/a MPO381605  
rotation period rot_per 4.37 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

46484 (2245 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2245 T-2 = 1998 KK27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-26 00:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin