RECON: TNO occultation with 07LH38

Event between 07LH38 and star GA0820:10062621 with event index number of 2026381

Geocentric closest approach at 2024/06/08 08:58:29 UTC

J2000 position of star is 18:31:01.6 -06:31:46
Equinox of date position of star is 18:32:14.9 -06:30:43
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 158 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 37.7 AU from the Sun and 36.8 AU from the Earth.
The TNO is moving 22.1 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 457 seconds.
The 1-sigma cross-track error in the shadow position is 5516 km.
The sky-plane scale is 26714.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.7
Diameter=171.4 km assuming a 5% albedo -- 7.8 sec chord
Diameter=70.0 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 07LH38, (2024/06/08 08:58UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.6 -26:29:03  0.9 35.12 149
60Bet Oph      17:44:40.9 +04:33:32  2.8 16.25 144
PPM 201808     18:31:32.7 -05:42:22  6.2  0.83 157
PPM 201829     18:33:16.8 -06:05:43  8.2  0.48 158
PPM 201823     18:33:07.6 -06:40:42  9.4  0.26 158
07LH38         18:32:20.4 -06:30:38 15.6       158
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 2.0 sigma about the mid-time.
The median site spacing is 21.0 km RECON observability=1.0 and success probability=6.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:57:48 -10.9 NT Down 31.0 189.3 Up 08:42:48 - 09:12:48 2390
Kamloops 08:58:33 -15.3 AT Down 32.5 172.6 Up 08:43:33 - 09:13:33 2375
Kelowna 08:58:31 -16.0 AT Down 33.4 173.6 Up 08:43:31 - 09:13:31 2323
Peachland 08:58:32 -16.1 AT Down 33.5 173.3 Up 08:43:32 - 09:13:32 2317
Summerland 08:58:32 -16.3 AT Down 33.7 173.4 Up 08:43:32 - 09:13:32 2308
Penticton 08:58:31 -16.3 AT Down 33.7 173.5 Up 08:43:31 - 09:13:31 2303
Oliver 08:58:32 -16.6 AT Down 34.1 173.5 Up 08:43:32 - 09:13:32 2281
Anarchist Mountain Observatory 08:58:31 -16.8 AT Down 34.3 173.7 Up 08:43:31 - 09:13:31 2270
Victoria 08:58:45 -17.8 AT Down 34.4 168.8 Up 08:43:45 - 09:13:45 2255
Tonasket 08:58:31 -17.1 AT Down 34.6 173.6 Up 08:43:31 - 09:13:31 2251
Okanogan 08:58:32 -17.4 AT Down 34.9 173.4 Up 08:43:32 - 09:13:32 2230
Brewster 08:58:33 -17.7 AT Down 35.1 173.1 Up 08:43:33 - 09:13:33 2214
Manson/Chelan 08:58:34 -18.0 AT Down 35.3 172.6 Up 08:43:34 - 09:13:34 2202
Wenatchee 08:58:35 -18.5 Dark Down 35.8 172.4 Up 08:43:35 - 09:13:35 2172
Ellensburg 08:58:36 -18.9 Dark Down 36.2 172.1 Up 08:43:36 - 09:13:36 2146
Yakima 08:58:36 -19.3 Dark Down 36.6 172.0 Up 08:43:36 - 09:13:36 2120
Toppenish/White Swan 08:58:36 -19.5 Dark Down 36.8 172.2 Up 08:43:36 - 09:13:36 2104
PNWRO 08:58:31 -19.6 Dark Down 37.3 174.0 Up 08:43:31 - 09:13:31 2074
Goldendale 08:58:38 -20.1 Dark Down 37.3 171.6 Up 08:43:38 - 09:13:38 2070
The Dalles 08:58:39 -20.4 Dark Down 37.5 171.2 Up 08:43:39 - 09:13:39 2056
Maupin 08:58:39 -20.8 Dark Down 37.9 171.3 Up 08:43:39 - 09:13:39 2027
Sisters 08:58:42 -21.7 Dark Down 38.7 170.5 Up 08:43:42 - 09:13:42 1969
Bend 08:58:41 -21.9 Dark Down 39.0 170.8 Up 08:43:41 - 09:13:41 1951
Oregon Observatory 08:58:41 -22.1 Dark Down 39.2 170.6 Up 08:43:41 - 09:13:41 1940
North Lake 08:58:40 -22.6 Dark Down 39.8 171.2 Up 08:43:40 - 09:13:40 1893
Chiloquin 08:58:44 -23.4 Dark Down 40.4 169.9 Up 08:43:44 - 09:13:44 1848
Klamath Falls 08:58:44 -23.8 Dark Down 40.8 170.0 Up 08:43:44 - 09:13:44 1823
Lakeview 08:58:38 -23.5 Dark Down 41.0 171.8 Up 08:43:38 - 09:13:38 1814
Cedarville 08:58:38 -24.1 Dark Down 41.6 172.0 Up 08:43:38 - 09:13:38 1765
Fall River/Burney 08:58:43 -24.8 Dark Down 42.0 170.3 Up 08:43:43 - 09:13:43 1735
Susanville 08:58:41 -25.3 Dark Down 42.7 171.2 Up 08:43:41 - 09:13:41 1684
Greenville 08:58:42 -25.6 Dark Down 42.9 170.8 Up 08:43:42 - 09:13:42 1665
Gimple 08:58:42 -25.6 Dark Down 42.9 170.9 Up 08:43:42 - 09:13:42 1664
Quincy 08:58:42 -25.8 Dark Down 43.1 170.7 Up 08:43:42 - 09:13:42 1650
Portola 08:58:41 -25.9 Dark Down 43.3 171.4 Up 08:43:41 - 09:13:41 1638
Reno 08:58:38 -26.0 Dark Down 43.6 172.2 Up 08:43:38 - 09:13:38 1615
Carson City 08:58:38 -26.3 Dark Down 44.0 172.2 Up 08:43:38 - 09:13:38 1587
Dunrhomin 08:57:42 -21.1 Dark Down 42.5 191.8 Up 08:42:42 - 09:12:42 1582
Yerington 08:58:36 -26.4 Dark Down 44.2 173.0 Up 08:43:36 - 09:13:36 1569
Gardnerville 08:58:39 -26.6 Dark Down 44.2 172.2 Up 08:43:39 - 09:13:39 1568
CU-SBO 08:57:43 -21.4 Dark Down 42.8 191.7 Up 08:42:43 - 09:12:43 1563
Hawthorne 08:58:34 -26.7 Dark Down 44.8 173.7 Up 08:43:34 - 09:13:34 1530
Lee Vining 08:58:36 -27.4 Dark Down 45.3 173.0 Up 08:43:36 - 09:13:36 1489
Tonopah 08:58:29 -26.8 Dark Down 45.3 175.6 Up 08:43:29 - 09:13:29 1487
Bishop 08:58:34 -27.8 Dark Down 45.9 173.9 Up 08:43:34 - 09:13:34 1437
Beatty 08:58:27 -27.8 Dark Down 46.5 176.2 Up 08:43:27 - 09:13:27 1392
Indian Springs 08:58:23 -27.8 Dark Down 46.9 177.7 Up 08:43:23 - 09:13:23 1359
Henderson 08:58:21 -28.2 Dark Down 47.4 178.7 Up 08:43:21 - 09:13:21 1312
Patrick 08:58:16 -28.4 Dark Down 48.1 180.3 Up 08:43:16 - 09:13:16 1254
Laughlin/Bullhead City 08:58:19 -28.8 Dark Down 48.3 179.2 Up 08:43:19 - 09:13:19 1237
Kingman/Dolan Springs 08:58:17 -28.7 Dark Down 48.3 180.0 Up 08:43:17 - 09:13:17 1237
Mohave Valley 08:58:20 -29.1 Dark Down 48.6 179.2 Up 08:43:20 - 09:13:20 1215
Lake Havasu City 08:58:18 -29.4 Dark Down 49.0 179.6 Up 08:43:18 - 09:13:18 1180
Wildwood 08:58:36 -30.9 Dark Down 49.2 173.2 Up 08:43:36 - 09:13:36 1171
Parker 08:58:19 -29.7 Dark Down 49.3 179.7 Up 08:43:19 - 09:13:19 1150
Idyllwild 08:58:29 -30.8 Dark Down 49.7 176.0 Up 08:43:29 - 09:13:29 1131
George/Scottsdale 08:58:08 -29.3 Dark Down 49.7 183.3 Up 08:43:08 - 09:13:08 1099
Calipatria 08:58:24 -31.0 Dark Down 50.3 177.8 Up 08:43:24 - 09:13:24 1072
Yuma 08:58:21 -31.2 Dark Down 50.8 179.1 Up 08:43:21 - 09:13:21 1029

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 07LH38, (2024/06/08 08:58UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 35.12 149
60Bet Oph      17:43:28.3 +04:34:06  2.8 16.25 144
PPM 201808     18:30:14.3 -05:43:28  6.2  0.83 157
PPM 201829     18:31:58.2 -06:06:52  8.2  0.48 158
PPM 201823     18:31:48.6 -06:41:51  9.4  0.26 158
07LH38         18:31:01.6 -06:31:46 15.6       158
Positions are for J2000

Event circumstances last updated at 2022/09/27 03:50:06 UT

Marc W. Buie, Southwest Research Institute

RECON