SSO/WISE Associations File (January 24, 2014) [sso07 WSDC D-I187, vsn 1.91 for WSDC v7, SSOID vsn 3.2 B31104] Interface Name: SSO/WISE Associations Type of Interface: table file Written By: SSOID (ssoid, ssothmod)__________________ J. Fowler Read By: SSOID (ssothmod)_________________________ J. Fowler DBPREP___________________________________ S. Wheelock QA_______________________________________ D. Kirkpatrick This file is produced by the ops pipeline for each frameset in a science scan by the SSOID module ssoid. It may also be generated offline by the ssothmod module when it is desired to recompute the thermal-model parameters, in which case another header line will be added at the top that resembles the one shown below but will refer to ssothmod. Table Header Information: NPrd: No. of predicted SSOs in the frame Nps: No. of WISE sources in the frame NMch: No. of matched pairs of SSOs and WISE sources Nmiss: No. of unmatched SSOs Ncnfzd: No. of confused matches (more than one WISE source per SSO) ObsEpoch: Observation epoch in JD OrbEpoch: Epoch of osculating elements in JD Sample Header: \ SSOID Vsn 3.2 B31104 run on 11-04-13 at 11:53:42 \Nprd = 64 \Nps = 8866 \Nmch = 50 \Nmiss = 14 \Ncnfzd = 20 \ObsEpoch = 2455159.827222 \OrbEpoch = 2454800.500000 | IDNum|W1nois|W2nois|W3nois|W4nois|MConf|N|M| dRA | dDec| RA | Dec | ObjID |T| RHelio | RTopo | Phase | VMag | Mu |Theta| EMj|EMn|ErAng| PerDist | Ecc | Incl | PV1 | PV2 | PV3 | QV1 | QV2 | QV3 | LongAN | ArgPer | PerTime | Err| Amag|Slope|w1mpro|w1sgmp| w1snr |w2mpro|w2sgmp| w2snr |w3mpro|w3sgmp| w3snr |w4mpro|w4sgmp| w4snr | Bond|SgBnd| Diam |SigDm| Beam|SgBem| Tss |SgTss| scan |frame| ObsEpoch | | int | real | real | real | real | real|i|i| real| real| real | real | char |c| real | real | real | real | real | real| r | r | real| real | real | real | real | real | real | real | real | real | real | real | real |real| real| real| real | real | real | real | real | real | real | real | real | real | real | real | real| real| real | real| real| real| real | real| char | int | real | | | DN | DN | DN | DN | | | | asec| asec| deg | deg | | | AU | AU | deg | mag | asec/s| deg |asec| as| deg | AU | | deg | | | | | | | deg | deg | JD | | mag | | mag | mag | | mag | mag | | mag | mag | | mag | mag | | | | km | km | | | k | k | | | JD | | null | null | null | null | null | null|-|n| null| null| null | null | null |-| null | null | null | null | null | null|null|nul| null| null | null | null | null | null | null | null | null | null | null | null | null |null| null| null| null | null | null | null | null | null | null | null | null | null | null | null | null| null| null | null| null| null| null | null| null | null| null | Description of Columns: Cols Name Description Units Type Format ------- ------ ------------------------------------- ------- ---- -------- 1-7 IDNum WISE point-source ID no. in frame [1] - I*4 I7 8-14 W1nois Noise in W1 [2] DN R*4 F7.2 15-21 W2nois Noise in W2 [2] DN R*4 F7.2 22-28 W3nois Noise in W3 [2] DN R*4 F7.2 29-35 W4nois Noise in W4 [2] DN R*4 F7.2 36-41 MConf Match confidence parameter [3] - R*4 F6.2 42-43 N No. of WISE point sources within - I*4 I2 association threshold (max 9) [1] 44-45 M No. of SSOs matching the WISE point - I*4 I2 source specified by IDNum (max 9) [1] 46-51 dRA RA discrepancy (WISE - SSO) arcsec R*4 F6.1 52-57 dDec Dec discrepancy (WISE - SSO) arcsec R*4 F6.1 58-68 RA Right Ascension (predicted) deg R*8 F11.6 69-79 Dec Declination (predicted) deg R*8 F11.6 80-115 ObjID Object ID field - C*35 1x,A35 116-117 T Type of object [8] - C*1 1x,A1 118-127 RHelio Heliocentric distance AU R*8 F10.5 128-137 RTopo Topocentric (spacecraft) distance AU R*8 F10.5 138-145 Phase Phase angle deg R*8 F8.3 146-152 VMag Visual magnitude mag R*8 F7.3 153-160 Mu Proper motion arcsec/s R*8 F8.3 161-166 Theta Direction of proper motion (E of N) deg R*8 F6.1 167-171 EMj Semimajor axis of error ellipse arcsec R*8 F5.1 172-175 EMn Semiminor axis of error ellipse arcsec R*8 F4.1 176-181 ErAng Direction of EMj axis (E of N) deg R*8 F6.1 182-192 PerDist Perihelion distance AU R*8 F11.7 193-202 Ecc Orbital eccentricity - R*8 F10.7 203-215 Incl Orbital inclination deg R*8 F13.8 216-227 PV1 P vector X component [4] - R*8 F12.8 228-239 PV2 P vector Y component [4] - R*8 F12.8 240-251 PV3 P vector Z component [4] - R*8 F12.8 252-263 QV1 Q vector X component [5] - R*8 F12.8 264-275 QV2 Q vector Y component [5] - R*8 F12.8 276-287 QV3 Q vector Z component [5] - R*8 F12.8 288-300 LongAN Longitude of the Ascending Node deg R*8 F13.8 301-313 ArgPer Argument of Perihelion deg R*8 F13.8 314-327 PerTime Perihelion passage time JD R*8 F14.5 328-332 Err Orbital element quality estimate - R*8 F5.1 333-338 Amag Absolute magnitude mag R*8 F6.2 339-344 Slope Slope parameter [6] - R*4 F6.2 345-351 w1mpro WISE source W1 magnitude mag R*4 F7.3 352-358 w1sgmp WISE source W1 magnitude uncertainty mag R*4 F7.3 359-366 w1snr WISE source W1 S/N ratio - R*4 F8.1 367-373 w2mpro WISE source W2 magnitude mag R*4 F7.3 374-380 w2sgmp WISE source W2 magnitude uncertainty mag R*4 F7.3 381-388 w2snr WISE source W2 S/N ratio - R*4 F8.1 389-395 w3mpro WISE source W3 magnitude mag R*4 F7.3 396-402 w3sgmp WISE source W3 magnitude uncertainty mag R*4 F7.3 403-410 w3snr WISE source W3 S/N ratio - R*4 F8.1 411-417 w4mpro WISE source W4 magnitude mag R*4 F7.3 418-424 w4sgmp WISE source W4 magnitude uncertainty mag R*4 F7.3 425-432 w4snr WISE source W4 S/N ratio - R*4 F8.1 433-438 Bond Bond albedo - R*4 F6.3 439-444 SgBnd Bond albedo uncertainty - R*4 F6.3 445-452 Diam Diameter km R*4 F8.2 453-458 SigDm Diameter uncertainty km R*4 F6.2 459-464 Beam Beaming parameter - R*4 F6.3 465-470 SgBem Beaming parameter uncertainty - R*4 F6.3 471-478 Tss Sub-Solar Temperature k R*4 F8.2 479-484 SgTss Sub-Solar Temperature uncertainty k R*4 F6.2 485-491 ScanID Scan ID - C*6 1x,A6 492-497 FrmID Frame ID - I*4 3x,I3 498-515 ObsEpoch Epoch of observation (frame) JD R*8 F18.9 Notes: 1.) If no association is made, IDNum = null, N = 0, and M = 'n' (null); N and M will be clipped at 9 if necessary in order to prevent field overflow. 2.) The noise values are those from the WISE source file if an association was made, otherwise they are the average noise values for the frame, averaged over all input WISE sources. 3.) MConf is a 2-D chi-square parameter; it will be clipped on the high side at 99.99 if necessary; it will be "null" if no association was made. 4.) The P vector is the unit vector from the Sun toward perihelion in J2000. 5.) The Q unit vector is orthogonal to the P vector in the orbital plane, right-handed about the orbital angular momentum vector. 6.) The slope parameter is used in computing the phase-dependent term in the visual magnitude using the asteroid phase function developed by Bowell, Harris, and Lumme 7.) All uncertainties are 1-sigma values 8.) Object types are indicated by one-character codes as follows: A Asteroid (numbered) U Unnumbered asteroid C Periodic Comet N Non-Periodic Comet P Planet S Satellite of Planet X Unknown Type identifiers are associated with the SSOs in the Orbital Elements File (SIS sso01, WSDC-I145) via the ssoidin namelist input to the ssoid module and the ssoinin namelist input to the ssoinit module (SSOID SDS, WSDC D-D017, sections 2.2.6 and 2.1.4, respectively). The relevant variables in both namelists are the arrays NamType(50) and NType(50), which allow up to 50 different 1-character Type IDs to be used. They operate as follows: suppose the first 250,000 SSOs in the Orbital Elements File are numbered asteroids, the next 190,000 are unnumbered asteroids, the next 500 are periodic comets, the next 2500 are non-periodic comets, and the next 8 are planets; then these arrays would have the following values: NamType(1) = 'A', NType(1) = 250000, NamType(2) = 'U', NType(2) = 190000, NamType(3) = 'C', NType(3) = 500, NamType(4) = 'N', NType(4) = 2500 NamType(5) = 'P', NType(5) = 8, NamType(6) = 'X', NType(6) = 999999, where the last Type ("X") need not correspond to actual entries in the file. The Type ID "S" is assigned independently by the ssoid module in the code section dedicated to processing Planetary Satellites. The ssoidin namelist has an additional parameter, TypeDesc, that gives full names for the types; these are used in the meta-data output (SIS sso05). The current values are: TypeDesc(1) = 'numbered Asteroids', TypeDesc(2) = 'Unnumbered asteroids', TypeDesc(3) = 'periodic Comets', TypeDesc(4) = 'Non-periodic comets', TypeDesc(5) = 'Planets', TypeDesc(6) = 'Unknown'