RECON: TNO occultation with 07JF45

Event between 07JF45 and star GA0780:06390136 with event index number of 2022235

Geocentric closest approach at 2021/05/18 07:48:35 UTC

J2000 position of star is 17:24:36.1 -11:56:56
Equinox of date position of star is 17:25:47.9 -11:58:01
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 129 degrees from the moon. Moon is 35% illuminated.
TNO apparent brightness V=21.9

[RECON map]
TNO is 39.8 AU from the Sun and 38.9 AU from the Earth.
The TNO is moving 22.2 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 112 seconds.
The 1-sigma cross-track error in the shadow position is 1580 km.
The sky-plane scale is 28187.4 km/arcsec.

The TNO has an absolute magnitude Hv=5.9
Diameter=394.5 km assuming a 5% albedo -- 17.7 sec chord
Diameter=161.0 km assuming a 30% albedo -- 7.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 07JF45, (2021/05/18 07:49UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.3 -26:28:39  0.9 19.45 120
35Eta Oph      17:11:36.3 -15:45:00  2.6  5.12 127
53Nu Ser       17:22:01.9 -12:52:01  4.0  1.29 128
PPM 233017     17:25:14.4 -11:43:12  8.1  0.28 129
PPM 233031     17:25:57.1 -11:54:19  9.7  0.07 129
07JF45         17:25:47.9 -11:58:01 16.1       129
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 5.0 sigma about the mid-time.
The median site spacing is 18.5 km RECON observability=1.0 and success probability=14.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 07:50:39 -20.1 Dark Up 23.6 151.5 Low 07:40:51 - 08:00:28 -1326
Kelowna 07:50:41 -20.5 Dark Up 23.9 151.2 Low 07:40:52 - 08:00:29 -1352
Peachland 07:50:41 -20.6 Dark Up 23.9 150.9 Low 07:40:53 - 08:00:30 -1364
Summerland 07:50:41 -20.8 Dark Up 24.1 151.0 Low 07:40:53 - 08:00:30 -1371
Penticton 07:50:41 -20.8 Dark Up 24.2 151.1 Low 07:40:53 - 08:00:30 -1373
Oliver 07:50:42 -21.2 Dark Up 24.5 151.0 Low 07:40:53 - 08:00:30 -1395
Anarchist Mountain Observatory 07:50:41 -21.4 Dark Up 24.7 151.2 Low 07:40:53 - 08:00:30 -1401
Tonasket 07:50:42 -21.7 Dark Up 24.9 151.0 Low 07:40:53 - 08:00:30 -1422
Okanogan 07:50:43 -22.0 Dark Up 25.2 150.8 Low 07:40:55 - 08:00:32 -1446
Brewster 07:50:43 -22.3 Dark Up 25.3 150.5 Low 07:40:55 - 08:00:32 -1466
Manson/Chelan 07:50:45 -22.5 Dark Up 25.4 150.1 Low 07:40:56 - 08:00:33 -1486
Victoria 07:50:53 -21.7 Dark Up 23.7 147.0 Low 07:41:05 - 08:00:42 -1505
Wenatchee 07:50:46 -22.9 Dark Up 25.8 149.8 Low 07:40:57 - 08:00:34 -1520
Ellensburg 07:50:47 -23.4 Dark Up 26.0 149.5 Low 07:40:59 - 08:00:36 -1550
Pasco 07:50:44 -24.1 Dark Up 27.2 150.8 Low 07:40:55 - 08:00:32 -1573
Yakima 07:50:48 -23.8 Dark Up 26.4 149.4 Low 07:40:59 - 08:00:36 -1577
PNWRO 07:50:43 -24.4 Dark Up 27.5 150.9 Low 07:40:55 - 08:00:32 -1584
Toppenish/White Swan 07:50:47 -24.0 Dark Up 26.6 149.5 Low 07:40:59 - 08:00:36 -1588
Goldendale 07:50:49 -24.5 Dark Up 27.0 148.9 Low 07:41:01 - 08:00:38 -1633
The Dalles 07:50:51 -24.7 Dark Up 27.0 148.5 Low 07:41:02 - 08:00:39 -1655
Maupin 07:50:51 -25.2 Dark Up 27.4 148.5 Low 07:41:03 - 08:00:40 -1681
Dunrhomin 07:50:02 -28.9 Dark Down 36.5 164.6 Up 07:40:13 - 07:59:50 -1722
Redmond 07:50:53 -26.1 Dark Up 28.2 148.2 Low 07:41:04 - 08:00:41 -1744
Sisters 07:50:53 -26.0 Dark Up 28.0 147.8 Low 07:41:05 - 08:00:42 -1750
Bend 07:50:53 -26.3 Dark Up 28.3 148.0 Low 07:41:04 - 08:00:41 -1762
Oregon Observatory 07:50:54 -26.4 Dark Up 28.4 147.8 Low 07:41:05 - 08:00:42 -1776
La Pine/Gilchrist 07:50:54 -26.6 Dark Up 28.5 147.7 Low 07:41:05 - 08:00:42 -1792
North Lake 07:50:53 -27.1 Dark Up 29.1 148.2 Low 07:41:04 - 08:00:41 -1810
Paisley 07:50:52 -27.7 Dark Up 29.7 148.4 Low 07:41:03 - 08:00:40 -1842
Lakeview 07:50:52 -28.2 Dark Up 30.2 148.4 Up 07:41:03 - 08:00:40 -1874
Chiloquin 07:50:56 -27.7 Dark Up 29.3 147.0 Low 07:41:08 - 08:00:45 -1878
Klamath Falls 07:50:57 -28.1 Dark Up 29.6 147.0 Low 07:41:08 - 08:00:45 -1901
Cedarville 07:50:52 -28.8 Dark Up 30.9 148.4 Up 07:41:03 - 08:00:40 -1918
Fall River/Burney 07:50:56 -29.3 Dark Up 30.8 147.0 Up 07:41:08 - 08:00:45 -1979
Susanville 07:50:54 -29.9 Dark Up 31.6 147.5 Up 07:41:06 - 08:00:43 -2010
Gimple 07:50:56 -30.2 Dark Up 31.8 147.2 Up 07:41:08 - 08:00:45 -2035
Greenville 07:50:56 -30.2 Dark Up 31.7 147.1 Up 07:41:08 - 08:00:45 -2037
Portola 07:50:55 -30.5 Dark Up 32.2 147.5 Up 07:41:06 - 08:00:43 -2051
Quincy 07:50:56 -30.4 Dark Up 31.9 147.1 Up 07:41:08 - 08:00:45 -2052
Reno 07:50:53 -30.8 Dark Up 32.7 148.1 Up 07:41:04 - 08:00:41 -2058
Carson City 07:50:53 -31.2 Dark Up 33.0 148.0 Up 07:41:05 - 08:00:42 -2084
Yerington 07:50:51 -31.4 Dark Up 33.4 148.6 Up 07:41:03 - 08:00:40 -2086
Gardnerville 07:50:54 -31.4 Dark Up 33.2 148.0 Up 07:41:05 - 08:00:42 -2102
Hawthorne 07:50:50 -31.9 Dark Up 34.0 149.0 Up 07:41:01 - 08:00:38 -2110
Tonopah 07:50:45 -32.3 Dark Up 35.0 150.4 Up 07:40:57 - 08:00:34 -2116
Lee Vining 07:50:52 -32.4 Dark Up 34.3 148.3 Up 07:41:03 - 08:00:40 -2163
Bishop 07:50:50 -33.0 Dark Up 35.1 148.9 Up 07:41:02 - 08:00:39 -2194
Beatty 07:50:44 -33.4 Dark Up 36.2 150.5 Up 07:40:56 - 08:00:33 -2196
Indian Springs 07:50:41 -33.7 Dark Up 36.9 151.5 Up 07:40:52 - 08:00:29 -2199
Henderson 07:50:39 -34.2 Dark Up 37.6 152.1 Up 07:40:50 - 08:00:27 -2226
Patrick 07:50:35 -34.8 Dark Up 38.6 153.2 Up 07:40:47 - 08:00:24 -2252
Kingman/Dolan Springs 07:50:36 -35.0 Dark Up 38.7 152.9 Up 07:40:48 - 08:00:25 -2274
Laughlin/Bullhead City 07:50:38 -35.1 Dark Up 38.5 152.3 Up 07:40:50 - 08:00:27 -2287
Mohave Valley 07:50:38 -35.4 Dark Up 38.8 152.2 Up 07:40:50 - 08:00:27 -2308
Lake Havasu City 07:50:37 -35.7 Dark Up 39.2 152.3 Up 07:40:48 - 08:00:25 -2335
George/Scottsdale 07:50:28 -36.3 Dark Down 40.8 154.9 Up 07:40:39 - 08:00:16 -2345
Parker 07:50:37 -36.1 Dark Up 39.6 152.2 Up 07:40:48 - 08:00:25 -2363
CPSLO 07:51:00 -35.0 Dark Up 35.9 145.7 Up 07:41:11 - 08:00:48 -2407
Blythe 07:50:38 -36.6 Dark Up 39.9 151.7 Up 07:40:50 - 08:00:27 -2412
Idyllwild 07:50:46 -36.6 Dark Up 38.9 149.3 Up 07:40:58 - 08:00:35 -2447
Wildwood 07:50:52 -36.3 Dark Up 37.8 147.4 Up 07:41:04 - 08:00:41 -2460
Calipatria 07:50:42 -37.2 Dark Up 40.0 150.4 Up 07:40:54 - 08:00:31 -2472
Yuma 07:50:39 -37.5 Dark Down 40.7 151.2 Up 07:40:51 - 08:00:28 -2488

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 07JF45, (2021/05/18 07:49UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.45 120
35Eta Oph      17:10:22.7 -15:43:29  2.6  5.12 127
53Nu Ser       17:20:49.7 -12:50:49  4.0  1.29 128
PPM 233017     17:24:02.8 -11:42:06  8.1  0.28 129
PPM 233031     17:24:45.4 -11:53:15  9.7  0.07 129
07JF45         17:24:36.1 -11:56:56 16.1       129
Positions are for J2000

Event circumstances last updated at 2021/05/18 00:32:36 UT

Marc W. Buie, Southwest Research Institute

RECON