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 ]  
501 Urhixidur (A903 BK)
Classification: Main-belt Asteroid          SPK-ID: 2000501
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 83 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1413409283803063 3.5233e-08  
a 3.164065499521278 1.0491e-08 au
q 2.716853544362843 1.1353e-07 au
i 20.83556736096124 3.5076e-06 deg
node 357.2365558936231 1.0292e-05 deg
peri 356.17795168 1.7407e-05 deg
M 120.0970753842246 1.5264e-05 deg
tp 2458514.701461012458
(2019-Jan-31.20146101)
8.6088e-05 TDB
period 2055.732608355801
5.63
1.0224e-05
2.799e-08
d
yr
n .1751200513805792 8.7096e-10 deg/d
Q 3.611277454679714 1.1974e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3794  
   data-arc span      43103 days (118.01 yr)  
   first obs. used      1903-01-18  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3152  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:47:10  

Additional Information
 Earth MOID = 1.7109 au 
 Jupiter MOID = 1.83501 au 
 T_jup = 3.087 
[ 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 9.4   n/a MPO502157  
diameter diameter 74.457 km 0.628 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 13.1743 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Hills, K. (2013) Minor Planet Bull. 40, 12-13.]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.052   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

501 Urhixidur (A903 BK)          Discovered 1903-Jan-18 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ 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
1909-Nov-06 09:49 00:01 Jupiter 1.8518001560365 1.85179970730008 1.85180060477429 5.37150012648568 5.28566020040709 2418616.909264964 1.26173878460386 160.793222055301 19.0987590331094 85.9274088466478 5723103.46038849 T 83 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:20 2021-Feb-24 00:47
1920-Sep-02 06:31 00:01 Jupiter 1.92725426545472 1.92725341019445 1.92725512072199 5.11835166999576 5.03175215685706 2422569.771602388 1.20875866987275 333.24995275673 35.1749087758471 -85.7331444319693 4891629.21986964 T 83 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:20 2021-Feb-24 00:47
2016-Mar-04 04:17 < 00:01 Jupiter 1.8252770704553 1.82527672741303 1.82527741349757 5.34571547879143 5.25819085154839 2457451.678656069 0.200210527903297 117.162365102513 16.4422700505009 -88.8387361189412 5574429.73016618 T 83 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:20 2021-Feb-24 00:47
2111-Aug-28 23:20 00:01 Jupiter 1.87993807771887 1.87993739612194 1.87993875931622 5.33279102117292 5.24762256762768 2492326.472186999 1.17546450159192 124.747126924323 31.0608895619546 83.5506546178053 5328184.94324615 T 83 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:20 2021-Feb-24 00:47
2122-Jun-27 20:56 00:01 Jupiter 1.88144474251566 1.88144411613407 1.88144536890099 5.26600841464426 5.1798116545473 2496282.372242053 1.35319419060253 254.889592975859 26.2850366114859 -86.0790092219133 5524407.19727562 T 83 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:20 2021-Feb-24 00:47

Alternate Designations
 A903 BK = 1943 FC = 1949 FW = 1951 RB2 = 1951 SE = 1955 FB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-08 01:23 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin