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 ]  
43782 (1989 US2)
Classification: Main-belt Asteroid          SPK-ID: 2043782
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2832716839033796 3.6941e-08  
a 2.686640312105682 1.0447e-08 au
q 1.925591186852804 9.6197e-08 au
i 11.30529039276379 4.2261e-06 deg
node 220.2620447127576 1.9408e-05 deg
peri 161.1704096647584 2.063e-05 deg
M 77.83940541231628 7.4464e-06 deg
tp 2459048.715897383551
(2020-Jul-18.21589738)
3.2541e-05 TDB
period 1608.46908167815
4.40
9.3819e-06
2.569e-08
d
yr
n .223815306181953 1.3055e-09 deg/d
Q 3.44768943735856 1.3407e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1506  
   data-arc span      11486 days (31.45 yr)  
   first obs. used      1989-10-29  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45907  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:06:42  

Additional Information
 Earth MOID = .932333 au 
 Jupiter MOID = 2.03407 au 
 T_jup = 3.288 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457487.5 (2016-Apr-09.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2868110650739729 3.7326e-08  
q 1.91370403499782 9.7607e-08 au
tp 2457439.424484212071
(2016-Feb-20.92448421)
2.9744e-05 TDB
node 220.3488309900732 1.9366e-05 deg
peri 160.7810299422077 2.0529e-05 deg
i 11.32544401049825 4.2306e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1506  
   data-arc span      11486 days (31.45 yr)  
   first obs. used      1989-10-29  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45907  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:06:42  

Additional Information
 Jupiter MOID = 2.03407 au 
 T_jup = 3.288 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.39319998804045E-15 -3.634830201119898E-15 4.002073368267424E-13 5.127534644737272E-16 6.984527738610002E-14 -2.468152688539407E-15
q -3.634830201119898E-15 9.527175587548156E-15 -1.065372469493179E-12 -1.250093850968479E-15 -1.867981730101278E-13 6.852726509087583E-15
tp 4.002073368267424E-13 -1.065372469493179E-12 8.846794705368732E-10 -3.562703427320414E-12 2.180012857327767E-10 -2.506660753334342E-12
node 5.127534644737272E-16 -1.250093850968479E-15 -3.562703427320414E-12 3.750528854515002E-10 -3.678476305295631E-10 2.282204033289322E-11
peri 6.984527738610002E-14 -1.867981730101278E-13 2.180012857327767E-10 -3.678476305295631E-10 4.214306948129704E-10 -2.300072152242537E-11
i -2.468152688539407E-15 6.852726509087583E-15 -2.506660753334342E-12 2.282204033289322E-11 -2.300072152242537E-11 1.789838042025962E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.15   n/a E2021B10  

43782 (1989 US2)          Discovered 1989-Oct-29 by Hioki, T., Kawasato, N. at Okutama
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 US2 = 1998 XK80 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-31 00:24 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin