RECON: TNO occultation with 04HA79

Event between 04HA79 and star GA0820:04705909 with event index number of 2561341

Geocentric closest approach at 2024/05/08 06:32:59 UTC

J2000 position of star is 15:18:57.1 -07:17:30
Equinox of date position of star is 15:20:10.0 -07:22:24
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 166 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 43.0 AU from the Sun and 42.0 AU from the Earth.
The TNO is moving 25.6 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 490 seconds.
The 1-sigma cross-track error in the shadow position is 5429 km.
The sky-plane scale is 30497.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=233.4 km assuming a 5% albedo -- 9.1 sec chord
Diameter=95.3 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 04HA79, (2024/05/08 06:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.3 -26:29:02  0.9 25.43 160
27Bet Lib      15:18:19.3 -09:28:16  2.6  2.15 169
PPM 198488     15:22:25.0 -05:54:41  5.4  1.56 165
PPM 198427     15:18:32.0 -07:56:41  7.7  0.71 167
PPM 198444     15:19:48.6 -07:30:26  9.2  0.17 167
04HA79         15:20:15.2 -07:22:45 15.5       166
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 1.8 sigma about the mid-time.
The median site spacing is 17.0 km RECON observability=1.0 and success probability=8.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:34:35 -20.5 Dark Down 30.0 168.0 Low 06:19:35 - 06:49:35 2247
Kamloops 06:35:09 -19.7 Dark Down 28.2 151.9 Low 06:20:09 - 06:50:09 1816
Kelowna 06:35:07 -20.7 Dark Down 29.2 152.7 Low 06:20:07 - 06:50:07 1781
Peachland 06:35:08 -20.7 Dark Down 29.2 152.3 Low 06:20:08 - 06:50:08 1767
Summerland 06:35:08 -20.9 Dark Down 29.4 152.4 Low 06:20:08 - 06:50:08 1759
Penticton 06:35:08 -20.9 Dark Down 29.5 152.5 Low 06:20:08 - 06:50:08 1757
Oliver 06:35:08 -21.3 Dark Down 29.8 152.4 Low 06:20:08 - 06:50:08 1732
Anarchist Mountain Observatory 06:35:07 -21.5 Dark Down 30.0 152.6 Low 06:20:07 - 06:50:07 1725
Tonasket 06:35:08 -21.7 Dark Down 30.2 152.4 Up 06:20:08 - 06:50:08 1701
Okanogan 06:35:09 -22.0 Dark Down 30.5 152.1 Up 06:20:09 - 06:50:09 1674
Brewster 06:35:09 -22.2 Dark Down 30.7 151.8 Up 06:20:09 - 06:50:09 1649
Manson/Chelan 06:35:10 -22.3 Dark Down 30.7 151.4 Up 06:20:10 - 06:50:10 1625
Victoria 06:35:18 -20.9 Dark Down 29.1 148.1 Low 06:20:18 - 06:50:18 1589
Wenatchee 06:35:10 -22.7 Dark Down 31.1 151.1 Up 06:20:10 - 06:50:10 1586
Ellensburg 06:35:11 -23.1 Dark Down 31.4 150.7 Up 06:20:11 - 06:50:11 1550
PNWRO 06:35:07 -24.4 Dark Down 32.8 152.2 Up 06:20:07 - 06:50:07 1521
Yakima 06:35:11 -23.4 Dark Down 31.7 150.6 Up 06:20:11 - 06:50:11 1520
Toppenish/White Swan 06:35:11 -23.7 Dark Down 32.0 150.7 Up 06:20:11 - 06:50:11 1508
Dunrhomin 06:34:29 -32.3 Dark Down 41.6 167.1 Up 06:19:29 - 06:49:29 1472
Goldendale 06:35:12 -24.1 Dark Down 32.3 150.1 Up 06:20:12 - 06:50:12 1456
CU-SBO 06:34:29 -32.5 Dark Down 41.8 166.9 Up 06:19:29 - 06:49:29 1450
The Dalles 06:35:13 -24.2 Dark Down 32.4 149.6 Up 06:20:13 - 06:50:13 1429
Maupin 06:35:13 -24.6 Dark Down 32.8 149.6 Up 06:20:13 - 06:50:13 1401
Sisters 06:35:15 -25.3 Dark Down 33.4 148.7 Up 06:20:15 - 06:50:15 1320
Bend 06:35:15 -25.6 Dark Down 33.7 148.9 Up 06:20:15 - 06:50:15 1309
Oregon Observatory 06:35:15 -25.7 Dark Down 33.8 148.7 Up 06:20:15 - 06:50:15 1292
North Lake 06:35:14 -26.5 Dark Down 34.5 149.1 Up 06:20:14 - 06:50:14 1257
Lakeview 06:35:13 -27.6 Dark Down 35.6 149.3 Up 06:20:13 - 06:50:13 1189
Chiloquin 06:35:17 -26.8 Dark Down 34.7 147.8 Up 06:20:17 - 06:50:17 1177
Klamath Falls 06:35:16 -27.1 Dark Down 35.0 147.8 Up 06:20:16 - 06:50:16 1152
Cedarville 06:35:12 -28.2 Dark Down 36.3 149.3 Up 06:20:12 - 06:50:12 1142
Fall River/Burney 06:35:16 -28.3 Dark Down 36.2 147.7 Up 06:20:16 - 06:50:16 1068
Susanville 06:35:14 -29.1 Dark Down 37.0 148.3 Up 06:20:14 - 06:50:14 1038
Gimple 06:35:15 -29.3 Dark Down 37.2 148.0 Up 06:20:15 - 06:50:15 1009
Greenville 06:35:15 -29.3 Dark Down 37.1 147.9 Up 06:20:15 - 06:50:15 1007
Portola 06:35:14 -29.7 Dark Down 37.6 148.3 Up 06:20:14 - 06:50:14 994
Reno 06:35:11 -30.2 Dark Down 38.1 148.9 Up 06:20:11 - 06:50:11 992
Quincy 06:35:15 -29.5 Dark Down 37.3 147.8 Up 06:20:15 - 06:50:15 991
Yerington 06:35:10 -30.9 Dark Down 38.8 149.5 Up 06:20:10 - 06:50:10 965
Carson City 06:35:11 -30.5 Dark Down 38.4 148.8 Up 06:20:11 - 06:50:11 963
Tonopah 06:35:04 -32.3 Dark Down 40.4 151.4 Up 06:20:04 - 06:50:04 946
Gardnerville 06:35:12 -30.8 Dark Down 38.6 148.8 Up 06:20:12 - 06:50:12 944
Hawthorne 06:35:09 -31.5 Dark Down 39.4 149.9 Up 06:20:09 - 06:50:09 943
Lee Vining 06:35:10 -31.9 Dark Down 39.7 149.1 Up 06:20:10 - 06:50:10 881
Indian Springs 06:35:00 -34.1 Dark Down 42.3 152.6 Up 06:20:00 - 06:50:00 869
Beatty 06:35:03 -33.5 Dark Down 41.6 151.4 Up 06:20:03 - 06:50:03 863
Bishop 06:35:08 -32.6 Dark Down 40.5 149.7 Up 06:20:08 - 06:50:08 853
Henderson 06:34:57 -34.8 Dark Down 43.0 153.2 Up 06:19:57 - 06:49:57 845
Patrick 06:34:53 -35.6 Dark Down 43.9 154.4 Up 06:19:53 - 06:49:53 827
Kingman/Dolan Springs 06:34:54 -35.8 Dark Down 44.1 154.0 Up 06:19:54 - 06:49:54 802
Laughlin/Bullhead City 06:34:56 -35.7 Dark Down 43.9 153.4 Up 06:19:56 - 06:49:56 784
Mohave Valley 06:34:56 -36.0 Dark Down 44.2 153.3 Up 06:19:56 - 06:49:56 761
George/Scottsdale 06:34:47 -37.7 Dark Down 46.2 156.3 Up 06:19:47 - 06:49:47 746
Lake Havasu City 06:34:55 -36.4 Dark Down 44.6 153.4 Up 06:19:55 - 06:49:55 735
Parker 06:34:54 -36.8 Dark Down 44.9 153.3 Up 06:19:54 - 06:49:54 706
Idyllwild 06:35:02 -36.5 Dark Down 44.4 150.0 Up 06:20:02 - 06:50:02 595
Calipatria 06:34:58 -37.4 Dark Down 45.4 151.2 Up 06:19:58 - 06:49:58 579
Yuma 06:34:55 -38.0 Dark Down 46.1 152.2 Up 06:19:55 - 06:49:55 569
Wildwood 06:35:08 -35.6 Dark Down 43.2 147.9 Up 06:20:08 - 06:50:08 566

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 04HA79, (2024/05/08 06:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.43 160
27Bet Lib      15:17:00.3 -09:22:59  2.6  2.15 169
PPM 198488     15:21:07.5 -05:49:30  5.4  1.56 165
PPM 198427     15:17:13.7 -07:51:24  7.7  0.71 167
PPM 198444     15:18:30.5 -07:25:11  9.2  0.17 167
04HA79         15:18:57.1 -07:17:30 15.5       166
Positions are for J2000

Event circumstances last updated at 2022/09/27 03:46:12 UT

Marc W. Buie, Southwest Research Institute

RECON