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 ]  
2405 Welch (1963 UF)
Classification: Main-belt Asteroid          SPK-ID: 2002405
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
[ switch to new HTML5 viewer ]

Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1391941273203805 3.8812e-08  
a 3.197815247839075 1.7323e-08 au
q 2.752698145084309 1.2669e-07 au
i 2.25380064956361 4.459e-06 deg
node 128.0573814165295 0.00010585 deg
peri 3.097240668988009 0.00010684 deg
M 203.2714324241483 1.4942e-05 deg
tp 2459909.835495603054
(2022-Nov-26.33549560)
8.903e-05 TDB
period 2088.711608103399
5.72
1.6972e-05
4.647e-08
d
yr
n .1723550530400359 1.4005e-09 deg/d
Q 3.642932350593842 1.9734e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2384  
   data-arc span      25152 days (68.86 yr)  
   first obs. used      1951-08-06  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45624  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:44:46  

Additional Information
 Earth MOID = 1.76734 au 
 Jupiter MOID = 1.40379 au 
 T_jup = 3.179 
[ 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 11.6   n/a MPO473797 IRAS observations used: 5
diameter diameter 22.360 km 0.412 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.052   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.698   0.037 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=1.10 deg.
U-B UB 0.312   0.055 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=1.10 deg.
Tholen spectral type spec_T BCU:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

2405 Welch (1963 UF)          Discovered 1963-Oct-18 by Goethe Link Observatory at Brooklyn
Discovered by the Indiana Asteroid Program, Goethe Link Observatory, University of Indiana. This program was conceived and directed by F. K. Edmondson; the plates were blinked and measured astrometrically by B. Potter and, following her retirement, by D. Owings; and the photometry was performed under the direction of T. Gehrels. During the years 1947-1967, in which the plates were exposed, a large number of people participated in various aspects of the program.
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
1952-Apr-03 20:05 00:02 Jupiter 1.87623574305146 1.87623426780551 1.87623721829815 3.36484795581128 3.22789500251436 2434106.336461337 2.45951240357576 103.170107250526 21.0903044105633 59.8901618435676 2089669.41560097 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 15:44:57 2020-Jun-23 15:45
1963-Apr-07 00:57 00:02 Jupiter 1.63240096933942 1.63239989456873 1.63240204411029 2.19642264239031 1.9458955791724 2438126.539780752 2.02186974894848 95.785467917116 7.73128003642804 89.8519705571808 1624569.3196109 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 15:44:57 2020-Jun-23 15:45
1974-May-08 18:26 00:01 Jupiter 1.4885382197437 1.4885376795964 1.48853875989023 1.55921799689703 1.13714611300402 2442176.268256278 1.42799514438493 124.790441938067 115.593304498197 -32.4436843129411 1551249.40038728 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 15:44:57 2020-Jun-23 15:45
1985-Jul-04 03:39 < 00:01 Jupiter 1.48482362229995 1.48482325919043 1.48482398540896 1.42407010534366 0.941843453622568 2446250.652189358 0.921964430701896 180.019752851887 112.851973375367 31.5143768501946 2217276.21839872 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 15:44:57 2020-Jun-23 15:45
1996-Aug-27 01:27 < 00:01 Jupiter 1.6073929453854 1.60739254788554 1.60739334288489 1.68770312320663 1.33956461850355 2450322.560601335 0.552168373482098 71.7270414899349 42.7271195714429 83.9139945684469 2420394.23808523 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 15:44:57 2020-Jun-23 15:45
2007-Sep-28 20:53 < 00:01 Jupiter 1.82681544990715 1.82681504366832 1.82681585614587 2.35782783005875 2.15221529871818 2454372.370122124 0.286528210754416 51.0484093941116 7.09324085494543 -88.2169573997046 3107850.89213675 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 15:44:57 2020-Jun-23 15:45
2118-Feb-23 16:06 00:02 Jupiter 1.72457859343068 1.72457741729204 1.72457976956962 2.60998306319108 2.41448059236197 2494697.170489518 2.1438781992283 88.5329313559638 11.8837273599276 75.5834417735674 1770822.39262465 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 15:44:57 2020-Jun-23 15:45
2129-Mar-12 17:19 00:02 Jupiter 1.51547040532947 1.51546957012179 1.51547124053698 1.71850752668885 1.35478177809582 2498732.221818172 2.27811600777375 140.63301339965 69.4789289705625 -61.4552365259954 1370142.04963126 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 15:44:57 2020-Jun-23 15:45
2140-May-02 10:29 00:03 Jupiter 1.44225603727616 1.44225564894598 1.44225642560576 1.38884529241115 0.868510961977548 2502800.936781818 2.49832627048511 252.861168004692 220.261952950999 24.4751461457527 1819624.95139583 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 15:44:57 2020-Jun-23 15:45
2151-Jul-02 01:29 00:03 Jupiter 1.51225455082207 1.51225345892682 1.51225564271792 1.49889741277916 1.06135851277081 2506878.561921163 3.03338017951561 217.636084099601 81.5192180183756 48.686439645248 1921278.97955361 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 15:44:57 2020-Jun-23 15:45
2162-Aug-09 23:13 00:04 Jupiter 1.70924907977582 1.70924705231184 1.7092511072365 2.04168929859376 1.78252359154056 2510935.467297914 3.71732136209233 58.3120513425352 11.3559468270987 -87.1012257418478 734556.171250682 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 15:44:57 2020-Jun-23 15:45
2173-Aug-27 22:57 00:04 Jupiter 1.9745631840287 1.97456068381036 1.97456568424625 2.96944851889548 2.82129233420027 2514971.456173325 4.21266091906021 116.554605767046 36.7644088422067 42.9473491337421 1178177.68115265 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 15:44:57 2020-Jun-23 15:45

Alternate Designations
 1963 UF = 1965 AG1 = 1969 VV = 1972 JQ1 = 1974 RR = 1975 WG1 = 1977 DN9 = 1977 FV1 = 1979 OJ6 = 1980 RC2 = 1980 TF = 1981 YB2 
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-14 03:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin