RECON: TNO occultation with 05ER318

Event between 05ER318 and star GA0760:04708976 with event index number of 1674740

Geocentric closest approach at 2027/04/22 05:28:49 UTC

J2000 position of star is 12:51:14.9 -13:39:41
Equinox of date position of star is 12:52:24.4 -13:46:52
Stellar brightness G=13.4, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 30 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=22.9

[RECON map]
TNO is 30.8 AU from the Sun and 29.8 AU from the Earth.
The TNO is moving 23.1 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 238 seconds.
The 1-sigma cross-track error in the shadow position is 4170 km.
The sky-plane scale is 21602.2 km/arcsec.

The TNO has an absolute magnitude Hv=8.0
Diameter=150.0 km assuming a 5% albedo -- 6.5 sec chord
Diameter=61.2 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 

Star training set for 05ER318, (2027/04/22 05:29UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:38.2 -11:18:11  1.0  8.66  24
PPM 226546     12:57:19.7 -15:28:28  6.2  2.01  29
PPM 226446     12:52:50.7 -13:38:28  8.1  0.17  30
05ER318        12:52:40.9 -13:48:34 13.4        30
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 3.8 sigma about the mid-time.
The median site spacing is 13.9 km RECON observability=1.0 and success probability=10.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:30:45 -22.8 Dark Up 24.0 173.6 Low 05:15:45 - 05:45:45 2714
Kamloops 05:31:23 -19.3 Dark Up 23.3 158.5 Low 05:16:23 - 05:46:23 2208
Kelowna 05:31:20 -20.3 Dark Up 24.2 159.3 Low 05:16:20 - 05:46:20 2190
Peachland 05:31:21 -20.3 Dark Up 24.3 159.0 Low 05:16:21 - 05:46:21 2174
Summerland 05:31:21 -20.5 Dark Up 24.4 159.0 Low 05:16:21 - 05:46:21 2168
Penticton 05:31:21 -20.6 Dark Up 24.5 159.1 Low 05:16:21 - 05:46:21 2168
Oliver 05:31:21 -20.8 Dark Up 24.8 159.1 Low 05:16:21 - 05:46:21 2147
Anarchist Mountain Observatory 05:31:21 -21.0 Dark Up 25.0 159.3 Low 05:16:21 - 05:46:21 2144
Tonasket 05:31:21 -21.3 Dark Up 25.3 159.1 Low 05:16:21 - 05:46:21 2123
Okanogan 05:31:21 -21.5 Dark Up 25.6 158.9 Low 05:16:21 - 05:46:21 2098
Dunrhomin 05:30:35 -33.7 Dark Up 35.9 173.7 Up 05:15:35 - 05:45:35 2095
Brewster 05:31:22 -21.6 Dark Up 25.8 158.7 Low 05:16:22 - 05:46:22 2075
Manson/Chelan 05:31:23 -21.6 Dark Up 25.9 158.2 Low 05:16:23 - 05:46:23 2050
Wenatchee 05:31:23 -21.9 Dark Up 26.3 158.0 Low 05:16:23 - 05:46:23 2015
Ellensburg 05:31:24 -22.1 Dark Up 26.6 157.7 Low 05:16:24 - 05:46:24 1982
Victoria 05:31:31 -19.7 Dark Up 24.5 155.0 Low 05:16:31 - 05:46:31 1981
PNWRO 05:31:19 -23.6 Dark Up 28.0 159.2 Low 05:16:19 - 05:46:19 1977
Yakima 05:31:24 -22.4 Dark Up 27.0 157.6 Low 05:16:24 - 05:46:24 1956
Toppenish/White Swan 05:31:23 -22.7 Dark Up 27.2 157.7 Low 05:16:23 - 05:46:23 1948
Goldendale 05:31:25 -22.9 Dark Up 27.6 157.2 Low 05:16:25 - 05:46:25 1899
The Dalles 05:31:26 -22.9 Dark Up 27.8 156.7 Low 05:16:26 - 05:46:26 1871
Maupin 05:31:25 -23.3 Dark Up 28.2 156.8 Low 05:16:25 - 05:46:25 1848
Sisters 05:31:27 -23.7 Dark Up 28.8 156.0 Low 05:16:27 - 05:46:27 1773
Bend 05:31:26 -24.0 Dark Up 29.1 156.3 Low 05:16:26 - 05:46:26 1767
Oregon Observatory 05:31:27 -24.1 Dark Up 29.2 156.1 Low 05:16:27 - 05:46:27 1750
North Lake 05:31:25 -24.8 Dark Up 30.0 156.5 Low 05:16:25 - 05:46:25 1727
Lakeview 05:31:24 -25.9 Dark Up 31.1 156.9 Up 05:16:24 - 05:46:24 1675
Chiloquin 05:31:28 -24.8 Dark Up 30.3 155.3 Up 05:16:28 - 05:46:28 1646
Cedarville 05:31:23 -26.4 Dark Up 31.8 156.9 Up 05:16:23 - 05:46:23 1636
Klamath Falls 05:31:28 -25.1 Dark Up 30.7 155.3 Up 05:16:28 - 05:46:28 1625
Fall River/Burney 05:31:27 -26.2 Dark Up 31.9 155.5 Up 05:16:27 - 05:46:27 1557
Susanville 05:31:24 -27.0 Dark Up 32.7 156.1 Up 05:16:24 - 05:46:24 1540
Gimple 05:31:25 -27.1 Dark Up 32.8 155.8 Up 05:16:25 - 05:46:25 1512
Reno 05:31:22 -28.1 Dark Up 33.7 156.8 Up 05:16:22 - 05:46:22 1510
Greenville 05:31:26 -27.1 Dark Up 32.8 155.7 Up 05:16:26 - 05:46:26 1509
Portola 05:31:24 -27.6 Dark Up 33.3 156.1 Up 05:16:24 - 05:46:24 1504
Tonopah 05:31:14 -30.5 Dark Up 35.8 159.3 Up 05:16:14 - 05:46:14 1503
Yerington 05:31:20 -28.9 Dark Up 34.4 157.3 Up 05:16:20 - 05:46:20 1495
Quincy 05:31:25 -27.3 Dark Up 33.0 155.6 Up 05:16:25 - 05:46:25 1495
Carson City 05:31:22 -28.4 Dark Up 34.0 156.7 Up 05:16:22 - 05:46:22 1485
Hawthorne 05:31:18 -29.5 Dark Up 35.0 157.8 Up 05:16:18 - 05:46:18 1482
Gardnerville 05:31:21 -28.6 Dark Up 34.3 156.7 Up 05:16:21 - 05:46:21 1469
Indian Springs 05:31:08 -32.5 Dark Up 37.6 160.7 Up 05:16:08 - 05:46:08 1455
Henderson 05:31:05 -33.2 Dark Up 38.3 161.3 Up 05:16:05 - 05:46:05 1443
Patrick 05:31:01 -34.3 Dark Up 39.2 162.5 Up 05:16:01 - 05:46:01 1441
Beatty 05:31:12 -31.7 Dark Up 37.0 159.5 Up 05:16:12 - 05:46:12 1437
Lee Vining 05:31:20 -29.7 Dark Up 35.4 157.1 Up 05:16:20 - 05:46:20 1423
Kingman/Dolan Springs 05:31:01 -34.3 Dark Up 39.4 162.2 Up 05:16:01 - 05:46:01 1417
Bishop 05:31:17 -30.5 Dark Up 36.1 157.8 Up 05:16:17 - 05:46:17 1407
George/Scottsdale 05:30:53 -36.6 Dark Up 41.3 164.6 Up 05:15:53 - 05:45:53 1395
Laughlin/Bullhead City 05:31:03 -34.1 Dark Up 39.3 161.6 Up 05:16:03 - 05:46:03 1395
Mohave Valley 05:31:03 -34.3 Dark Up 39.5 161.5 Up 05:16:03 - 05:46:03 1375
Lake Havasu City 05:31:03 -34.8 Dark Up 40.0 161.7 Up 05:16:03 - 05:46:03 1355
Parker 05:31:02 -35.1 Dark Up 40.3 161.7 Up 05:16:02 - 05:46:02 1330
Yuma 05:31:02 -36.0 Dark Up 41.6 160.9 Up 05:16:02 - 05:46:02 1206
Calipatria 05:31:05 -35.2 Dark Up 40.9 159.9 Up 05:16:05 - 05:46:05 1203
Idyllwild 05:31:10 -34.1 Dark Up 40.0 158.6 Up 05:16:10 - 05:46:10 1202
Wildwood 05:31:16 -32.8 Dark Up 39.1 156.5 Up 05:16:16 - 05:46:16 1152

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 05ER318, (2027/04/22 05:29UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  8.66  24
PPM 226546     12:55:53.2 -15:19:37  6.2  2.01  29
PPM 226446     12:51:24.8 -13:29:35  8.1  0.17  30
05ER318        12:51:14.9 -13:39:41 13.4        30
Positions are for J2000

Event circumstances last updated at 2022/01/24 01:44:22 UT

Marc W. Buie, Southwest Research Institute

RECON