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 ]  
173879 (2001 UR42)
Classification: Main-belt Asteroid          SPK-ID: 2173879
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2000898210972823 4.9702e-08  
a 3.170359829162839 3.7574e-08 au
q 2.536003098131636 1.5089e-07 au
i 16.25286520480938 6.2329e-06 deg
node 31.41067848315977 2.0213e-05 deg
peri 248.5201739381446 2.5205e-05 deg
M 193.2172771784046 1.5395e-05 deg
tp 2459955.734106638222
(2023-Jan-11.23410664)
9.3254e-05 TDB
period 2061.869914173345
5.65
3.6655e-05
1.004e-07
d
yr
n .1745987938062198 3.1039e-09 deg/d
Q 3.804716560194042 4.5092e-08 au
  Orbit Determination Parameters
   # obs. used (total)      286  
   data-arc span      6315 days (17.29 yr)  
   first obs. used      2001-09-19  
   last obs. used      2019-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .617  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 15:35:57  

Additional Information
 Earth MOID = 1.57414 au 
 Jupiter MOID = 1.56301 au 
 T_jup = 3.110 
[ show covariance matrix ]

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 15.4   n/a MPO469864  

173879 (2001 UR42)          Discovered 2001-Oct-17 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1918-Dec-31 09:01 00:07 Jupiter 1.85517771527592 1.85517419101795 1.85518123999062 1.87601930045658 1.61440517684627 2421958.875594509 7.13811894619693 1935.93820534011 167.811216828881 64.8923126395543 1577184.5034939 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 15:35:59 2019-Jul-13 15:36
1929-Jul-21 23:18 00:04 Jupiter 1.55066879572708 1.55066790370455 1.55066968775199 3.94454792191145 3.80355063145476 2425814.470640995 3.69152519180347 580.979211219373 48.7000820870571 89.8449299936188 1631319.18518245 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 15:35:59 2019-Jul-13 15:36
1940-Apr-24 08:59 00:03 Jupiter 1.80095801962388 1.80095542184992 1.80096061917103 4.84871495463341 4.75072638866682 2429743.874075123 3.26621689074337 3056.30111047914 44.2540765940776 -87.7955012599954 2026864.643812 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 15:35:59 2019-Jul-13 15:36
2025-Oct-02 14:23 00:01 Jupiter 1.84136362913172 1.84136257275686 1.84136468551328 1.6514626120489 1.34437119952646 2460951.099617453 1.20653706209198 921.002482845751 126.89617374757 70.1269229890143 2930397.48405789 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 15:35:59 2019-Jul-13 15:36
2036-Apr-13 19:37 00:01 Jupiter 1.58468311014228 1.58468240301694 1.58468381727527 3.91622027808741 3.7772701003786 2464797.317683376 1.31101321020369 940.918416667863 30.7358740192774 89.7917965726514 1677848.74640285 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 15:35:59 2019-Jul-13 15:36
2047-Jan-09 07:31 00:02 Jupiter 1.84813330927224 1.84813148458436 1.84813513396265 4.99828360596437 4.90573277847925 2468719.813424826 1.97136702698838 492.505967213801 85.8423057385069 -87.7911882101173 1601780.53149944 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 15:35:59 2019-Jul-13 15:36
2132-Jul-05 15:23 00:09 Jupiter 1.82669465461246 1.82669141077479 1.8266979021635 1.41607884393901 1.03821798595849 2499943.141167023 9.34139433106726 6457.50236688785 233.991649952454 56.1898434013976 2033500.01145657 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 15:35:59 2019-Jul-13 15:36
2143-Jan-06 13:47 00:06 Jupiter 1.61652772761285 1.61652701382963 1.61652844140084 3.89574537021182 3.75884011638293 2503780.074397048 6.3281568440256 2148.93676787124 29.2637597640999 89.6015829196644 796779.021959783 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 15:35:59 2019-Jul-13 15:36
2153-Oct-01 07:07 00:07 Jupiter 1.88156680891835 1.88156121917345 1.88157239866261 5.1368734633366 5.04847814146753 2507700.796822815 7.07353091048463 380.63268831746 265.014268703077 80.2779504518089 510925.593249098 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 15:35:59 2019-Jul-13 15:36

Alternate Designations
 2001 UR42 = 2005 GK23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-04 08:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin