RECON: TNO occultation with 04HA79

Event between 04HA79 and star GA0820:04705909 with event index number of 1271563

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 15:19:59.9 -07:21:44
Stellar brightness G=15.5, use SENSEUP=128
Star is 166 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=23.7

[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 5426 km.
The sky-plane scale is 30497.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=195.0 km assuming a 5% albedo -- 7.7 sec chord
Diameter=79.6 km assuming a 30% albedo -- 3.1 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 15.4 km RECON observability=1.0 and success probability=6.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:35:07 -20.6 Dark Down 29.2 152.8 Low 06:20:07 - 06:50:07 1786
Summerland 06:35:08 -20.9 Dark Down 29.4 152.4 Low 06:20:08 - 06:50:08 1758
Penticton 06:35:07 -20.9 Dark Down 29.5 152.5 Low 06:20:07 - 06:50:07 1757
Okanagan Falls 06:35:07 -21.1 Dark Down 29.6 152.4 Low 06:20:07 - 06:50:07 1743
Oliver 06:35:08 -21.3 Dark Down 29.8 152.4 Low 06:20:08 - 06:50:08 1732
Anarchist Mountain Observatory 06:35:08 -21.5 Dark Down 30.0 152.6 Low 06:20:08 - 06:50:08 1725
Oroville 06:35:08 -21.5 Dark Down 30.0 152.5 Up 06:20:08 - 06:50:08 1718
Tonasket 06:35:07 -21.7 Dark Down 30.2 152.4 Up 06:20:07 - 06:50:07 1701
Okanogan 06:35:08 -22.0 Dark Down 30.5 152.1 Up 06:20:08 - 06:50:08 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
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
Pasco 06:35:08 -24.1 Dark Down 32.5 152.0 Up 06:20:08 - 06:50:08 1533
PNWRO 06:35:08 -24.4 Dark Down 32.8 152.2 Up 06:20:08 - 06:50:08 1520
Yakima 06:35:12 -23.4 Dark Down 31.7 150.6 Up 06:20:12 - 06:50:12 1520
Toppenish/White Swan 06:35:11 -23.7 Dark Down 32.0 150.7 Up 06:20:11 - 06:50:11 1508
Goldendale 06:35:12 -24.1 Dark Down 32.3 150.0 Up 06:20:12 - 06:50:12 1456
SwRI 06:34:29 -32.5 Dark Down 41.8 166.9 Up 06:19:29 - 06:49:29 1449
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 1400
Madras/Culver 06:35:14 -25.1 Dark Down 33.2 149.3 Up 06:20:14 - 06:50:14 1358
Redmond 06:35:14 -25.4 Dark Down 33.5 149.2 Up 06:20:14 - 06:50:14 1329
Sisters 06:35:15 -25.3 Dark Down 33.4 148.7 Up 06:20:15 - 06:50:15 1320
Bend 06:35:14 -25.6 Dark Down 33.7 148.9 Up 06:20:14 - 06:50:14 1308
Oregon Observatory 06:35:15 -25.7 Dark Down 33.8 148.7 Up 06:20:15 - 06:50:15 1291
La Pine/Gilchrist 06:35:15 -25.9 Dark Down 33.9 148.6 Up 06:20:15 - 06:50:15 1274
North Lake 06:35:14 -26.5 Dark Down 34.5 149.1 Up 06:20:14 - 06:50:14 1256
Paisley 06:35:13 -27.1 Dark Down 35.1 149.3 Up 06:20:13 - 06:50:13 1223
Lakeview 06:35:12 -27.6 Dark Down 35.6 149.3 Up 06:20:12 - 06:50:12 1189
Chiloquin 06:35:16 -26.8 Dark Down 34.7 147.8 Up 06:20:16 - 06:50:16 1176
Klamath Falls 06:35:17 -27.1 Dark Down 35.0 147.8 Up 06:20:17 - 06:50:17 1151
Cedarville 06:35:13 -28.2 Dark Down 36.3 149.3 Up 06:20:13 - 06:50:13 1141
Tulelake 06:35:16 -27.5 Dark Down 35.4 148.0 Up 06:20:16 - 06:50:16 1138
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 06:35:13 -29.7 Dark Down 37.6 148.3 Up 06:20:13 - 06:50:13 994
Reno 06:35:12 -30.2 Dark Down 38.1 148.9 Up 06:20:12 - 06:50:12 991
Quincy 06:35:15 -29.5 Dark Down 37.3 147.8 Up 06:20:15 - 06:50:15 990
Yerington 06:35:10 -30.9 Dark Down 38.8 149.5 Up 06:20:10 - 06:50:10 965
Carson City 06:35:12 -30.5 Dark Down 38.4 148.8 Up 06:20:12 - 06:50:12 962
Tonopah 06:35:04 -32.3 Dark Down 40.4 151.4 Up 06:20:04 - 06:50:04 945
Gardnerville 06:35:12 -30.8 Dark Down 38.6 148.8 Up 06:20:12 - 06:50:12 943
Hawthorne 06:35:08 -31.5 Dark Down 39.4 149.9 Up 06:20:08 - 06:50:08 942
Lee Vining 06:35:10 -31.9 Dark Down 39.7 149.1 Up 06:20:10 - 06:50:10 880
Indian Springs 06:34:59 -34.1 Dark Down 42.3 152.6 Up 06:19:59 - 06:49:59 868
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 - 06:50:08 852
Henderson 06:34:57 -34.8 Dark Down 43.0 153.2 Up 06:19:57 - 06:49:57 845
Patrick 06:34:54 -35.6 Dark Down 43.9 154.4 Up 06:19:54 - 06:49:54 827
Kingman/Dolan Springs 06:34:54 -35.8 Dark Down 44.1 154.0 Up 06:19:54 - 06:49:54 802
Searchlight/Boulder City 06:34:57 -35.3 Dark Down 43.5 153.1 Up 06:19:57 - 06:49:57 799
Lone Pine 06:35:07 -33.4 Dark Down 41.3 149.7 Up 06:20:07 - 06:50:07 798
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
Blythe 06:34:56 -37.2 Dark Down 45.3 152.7 Up 06:19:56 - 06:49:56 651
CPSLO 06:35:14 -33.8 Dark Down 41.3 146.1 Up 06:20:14 - 06:50:14 607
Idyllwild 06:35:02 -36.5 Dark Down 44.4 150.0 Up 06:20:02 - 06:50:02 594
Calipatria 06:34:58 -37.4 Dark Down 45.4 151.2 Up 06:19:58 - 06:49:58 579
Yuma 06:34:56 -38.0 Dark Down 46.1 152.2 Up 06:19:56 - 06:49:56 570
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 2019/08/04 22:27:15 UT

Marc W. Buie, Southwest Research Institute

RECON