urn:nasa:pds:voyager2_rss_uranus_49xr_raw:geometry:uk0015a 1.0 1.21.0.0 Product_Observational Simpson, R. A. 2025 Position and velocity vectors for Sun, Earth, Uranus, and Miranda in an EME 1950 frame with respect to the Voyager 2 spacecraft. All vectors are geometric -- that is, they are the actual positions and velocities at time SP1950 without compensation for light time travel. Values have been translated to ASCII from the original binary file. Two header records with fingerprint and descriptive information are not included; their content is carried forward in this label file. The file is an ASCII table with 2370 rows, each with 660 bytes; the last two positions in each record are occupied by the ASCII carriage-return and line-feed characters. All fields have fixed widths; fields are delimited by commas. This file is included primarily for historical interest — to preserve ephemeris information that was used by the Voyager Radio Science Team during initial analysis of the radio occultation data acquired during the Voyager 2 encounter with Uranus. Analysts seeking to reproduce those original results (or improve them) should consider using the SPICE files available through the JPL Navigation and Ancillary Information Facility (PDS NAIF Node). This product was delivered to PDS accompanied by a separate product -- the original binary file. The original was created using 6-bit bytes and 6-byte words. The original file was part of the JPL Celestial Reference System. 2025-04-09 1.0 The binary source file was recovered from holdings of the Voyager Radio Science Team. The binary file was converted to ASCII and a PDS4 label was created. 1986-01-24T14:05:00Z 1986-01-25T05:34:00Z Calibration Calibrated Ephemerides for the Voyager 2 encounter with Miranda and Uranus. Delivered as state vectors (position and velocity) for Sun, Earth, Uranus, and Miranda with respect to the Voyager 2 spacecraft after translation from the original Univac binary format. Radio Science Voyager Mission urn:nasa:pds:context:investigation:mission.voyager data_to_investigation Voyager 2 Host urn:nasa:pds:context:instrument_host:spacecraft.vg2 is_instrument_host Uranus Planet urn:nasa:pds:context:target:planet.uranus data_to_target Miranda Satellite urn:nasa:pds:context:target:satellite.uranus.miranda data_to_target urn:nasa:pds:voyager2_rss_uranus_49xr_raw:document:crs_notes data_to_document The referenced product is documentation of the CRS file format and content. urn:nasa:pds:voyager2_rss_uranus_49xr_raw:geometry:uk0015b data_to_associate The referenced product is the original source binary file. uk0015a.tab 2024-06-11T09:23:00 1564200 3c959c3ef0f8b1cdafdd1bb574563757 Voyager 2 Uranus - CRS File (ASCII) 0 2370 Position and velocity vectors for Sun, Earth, Uranus, and Miranda in an EME 1950 frame with respect to the Voyager 2 spacecraft. All vectors are geometric -- that is, they are the actual positions and velocities at time SP1950 without compensation for light time travel. Values have been translated to ASCII from the original binary file. Two header records with fingerprint and descriptive information are not included; their content is carried forward in this label file. The file is an ASCII table with 2370 rows, each with 660 bytes; the last two positions in each record are occupied by the ASCII carriage-return and line-feed characters. All fields have fixed widths; fields are delimited by commas. Carriage-Return Line-Feed 32 0 660 Record Number 1 1 ASCII_Integer 5 %5d Number of the record, starting from 1. Record Header 2 7 ASCII_Integer 8 %8d A record header -- presumably containing a code linking its value to a JPL dictionary with format and content information. It has been translated here assuming it is a 36-bit integer. Its value in the original file is hexadecimal 0x000e81001 -- the same for all 2370 records. SP1950 3 16 ASCII_Real 17 %17.6f second Spacecraft Event Time in seconds since 0 hour on 1950-01-01. JULDAT 4 34 ASCII_Real 14 %14.6f day Julian Day number. GREDAT1 5 49 ASCII_Integer 10 %10d The Gregorian date in YYYYMMDDDD format where YYYY is the 4-digit year, MM is the 2-digit month, and DDDD is the 4-digit day of month (padded with leading zeroes). GREDAT2 6 60 ASCII_Integer 10 %10d The time associated with GREDAT1 in hhmmssffff format where hh is the 2-digit hour, mm is the 2-digit minute, ss is the 2-digit second, and ffff is the 4-digit fractional second (100s of microseconds). ETMUTC 7 71 ASCII_Real 9 %9.6f second Ephemeris time minus UTC. The value is 55.184982 for all records in this table. IRECFL 8 81 ASCII_Integer 2 %2d Record flag and body indicator. A value 0 indicates that the record contains periodic information about an event. A positive number (K) indicates that the record contains periapsis data for the K-th body in the bodies list. A negative number (-K) indicates that the record contains apoapsis data for the K-th body. K=1 for Sun, 2 for Earth, 3 for Uranus, and 4 for Miranda. Record 121 contains periapsis data for Uranus (K=3). All other records have K=0. Most records are spaced by 10, 30, or 120 seconds. Sun Position X-Component 9 84 ASCII_Real 23 %23.16e km The x-component of the vector from the spacecraft to the Sun in the EME50 spacecraft-centered coordinate system. Sun Position Y-Component 10 108 ASCII_Real 23 %23.16e km The y-component of the vector from the spacecraft to the Sun in the EME50 spacecraft-centered coordinate system. Sun Position Z-Component 11 132 ASCII_Real 23 %23.16e km The z-component of the vector from the spacecraft to the Sun in the EME50 spacecraft-centered coordinate system. Sun Velocity X-Component 12 156 ASCII_Real 23 %23.16e km/s The x-component of the velocity vector of the Sun with respect to the spacecraft in the EME50 spacecraft-centered coordinate system. Sun Velocity Y-Component 13 180 ASCII_Real 23 %23.16e km/s The y-component of the velocity vector of the Sun with respect to the spacecraft in the EME50 spacecraft-centered coordinate system. Sun Velocity Z-Component 14 204 ASCII_Real 23 %23.16e km/s The z-component of the velocity vector of the Sun with respect to the spacecraft in the EME50 spacecraft-centered coordinate system. Earth Position X-Component 15 228 ASCII_Real 23 %23.16e km The x-component of the vector from the spacecraft to Earth in the EME50 spacecraft-centered coordinate system. Earth Position Y-Component 16 252 ASCII_Real 23 %23.16e km The y-component of the vector from the spacecraft to Earth in the EME50 spacecraft-centered coordinate system. Earth Position Z-Component 17 276 ASCII_Real 23 %23.16e km The z-component of the vector from the spacecraft to Earth in the EME50 spacecraft-centered coordinate system. Earth Velocity X-Component 18 300 ASCII_Real 23 %23.16e km/s The x-component of the velocity vector of the Earth with respect to the spacecraft in the EME50 spacecraft-centered coordinate system. Earth Velocity Y-Component 19 324 ASCII_Real 23 %23.16e km/s The y-component of the velocity vector of the Earth with respect to the spacecraft in the EME50 spacecraft-centered coordinate system. Earth Velocity Z-Component 20 348 ASCII_Real 23 %23.16e km/s The z-component of the velocity vector of the Earth with respect to the spacecraft in the EME50 spacecraft-centered coordinate system. Uranus Position X-Component 21 372 ASCII_Real 23 %23.16e km The x-component of the vector from the spacecraft to Uranus in the EME50 spacecraft-centered coordinate system. Uranus Position Y-Component 22 396 ASCII_Real 23 %23.16e km The y-component of the vector from the spacecraft to Uranus in the EME50 spacecraft-centered coordinate system. Uranus Position Z-Component 23 420 ASCII_Real 23 %23.16e km The z-component of the vector from the spacecraft to Uranus in the EME50 spacecraft-centered coordinate system. Uranus Velocity X-Component 24 444 ASCII_Real 23 %23.16e km/s The x-component of the velocity vector of Uranus with respect to the spacecraft in the EME50 spacecraft-centered coordinate system. Uranus Velocity Y-Component 25 468 ASCII_Real 23 %23.16e km/s The y-component of the velocity vector of Uranus with respect to the spacecraft in the EME50 spacecraft-centered coordinate system. Uranus Velocity Z-Component 26 492 ASCII_Real 23 %23.16e km/s The z-component of the velocity vector of Uranus with respect to the spacecraft in the EME50 spacecraft-centered coordinate system. Miranda Position X-Component 27 516 ASCII_Real 23 %23.16e km The x-component of the vector from the spacecraft to Miranda in the EME50 spacecraft-centered coordinate system. Miranda Position Y-Component 28 540 ASCII_Real 23 %23.16e km The y-component of the vector from the spacecraft to Miranda in the EME50 spacecraft-centered coordinate system. Miranda Position Z-Component 29 564 ASCII_Real 23 %23.16e km The z-component of the vector from the spacecraft to Miranda in the EME50 spacecraft-centered coordinate system. Miranda Velocity X-Component 30 588 ASCII_Real 23 %23.16e km/s The x-component of the velocity vector of Miranda with respect to the spacecraft in the EME50 spacecraft-centered coordinate system. Miranda Velocity Y-Component 31 612 ASCII_Real 23 %23.16e km/s The y-component of the velocity vector of Miranda with respect to the spacecraft in the EME50 spacecraft-centered coordinate system. Miranda Velocity Z-Component 32 636 ASCII_Real 23 %23.16e km/s The z-component of the velocity vector of Miranda with respect to the spacecraft in the EME50 spacecraft-centered coordinate system.