RECON: TNO occultation with 126154

Event between (126154) 01YH140 and star UC4-557-046794 with event index number of 183867

Geocentric closest approach at 2019/03/15 07:38:07 UTC

J2000 position of star is 09:18:30.4 +21:14:37
Equinox of date position of star is 09:19:31.5 +21:10:02
Stellar brightness R=13.5, use SENSEUP=32
Star is 40 degrees from the moon. Moon is 60% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 37.1 AU from the Sun and 36.3 AU from the Earth.
The TNO is moving 18.6 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 240 seconds.
The 1-sigma cross-track error in the shadow position is 1942 km.
The sky-plane scale is 26352.8 km/arcsec.

The TNO has an absolute magnitude Hv=5.5
Diameter=478.6 km assuming a 5% albedo -- 25.7 sec chord
Diameter=195.4 km assuming a 30% albedo -- 10.5 sec chord
Dynamical classification is 5:3EE
 
 
 
 
 
 

Star training set for 126154, (2019/03/15 07:38UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:23.6 +11:52:22  1.3 15.11  54
PPM 099404     09:14:42.9 +21:12:11  6.1  1.14  39
PPM 099479     09:19:42.7 +21:28:26  9.3  0.31  40
PPM 099469     09:19:07.1 +21:18:23 11.0  0.18  40
126154         09:19:35.9 +21:09:43 13.5        41
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 16.6 km RECON observability=1.0 and success probability=15.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 07:37:10 -42.8 Dark Up 54.5 228.6 Up 07:22:10 - 07:52:10 2428
Tonasket 07:37:10 -43.1 Dark Up 54.7 228.9 Up 07:22:10 - 07:52:10 2409
Okanogan 07:37:09 -43.4 Dark Up 55.0 229.0 Up 07:22:09 - 07:52:09 2377
Brewster 07:37:08 -43.6 Dark Up 55.3 229.1 Up 07:22:08 - 07:52:08 2348
Manson/Chelan 07:37:10 -43.8 Dark Up 55.6 228.8 Up 07:22:10 - 07:52:10 2320
Entiat 07:37:08 -44.0 Dark Up 55.8 228.9 Up 07:22:08 - 07:52:08 2300
Wenatchee 07:37:08 -44.2 Dark Up 56.0 229.1 Up 07:22:08 - 07:52:08 2276
Ellensburg 07:37:07 -44.6 Dark Up 56.4 229.2 Up 07:22:07 - 07:52:07 2234
Pasco 07:37:00 -45.5 Dark Up 56.1 232.0 Up 07:22:00 - 07:52:00 2214
PNWRO 07:36:59 -45.8 Dark Up 56.1 232.6 Up 07:21:59 - 07:51:59 2200
Yakima 07:37:07 -45.0 Dark Up 56.7 229.7 Up 07:22:07 - 07:52:07 2200
Toppenish/White Swan 07:37:06 -45.2 Dark Up 56.7 230.1 Up 07:22:06 - 07:52:06 2186
George/Umatilla 07:37:00 -45.8 Dark Up 56.4 232.1 Up 07:22:00 - 07:52:00 2179
Niwot 07:35:54 -51.6 Dark Up 49.9 254.7 Up 07:20:54 - 07:50:54 2164
Goldendale 07:37:05 -45.7 Dark Up 57.3 230.2 Up 07:22:05 - 07:52:05 2126
The Dalles 07:37:06 -45.9 Dark Up 57.6 229.9 Up 07:22:06 - 07:52:06 2096
Maupin 07:37:04 -46.3 Dark Up 57.8 230.6 Up 07:22:04 - 07:52:04 2063
Madras/Culver 07:37:03 -46.8 Dark Up 58.2 231.2 Up 07:22:03 - 07:52:03 2015
Redmond 07:37:01 -47.2 Dark Up 58.5 231.6 Up 07:22:01 - 07:52:01 1982
Sisters 07:37:03 -47.1 Dark Up 58.7 231.0 Up 07:22:03 - 07:52:03 1971
Bend 07:37:01 -47.3 Dark Up 58.7 231.7 Up 07:22:01 - 07:52:01 1959
Oregon Observatory 07:37:01 -47.5 Dark Up 58.9 231.7 Up 07:22:01 - 07:52:01 1939
La Pine/Gilchrist 07:37:00 -47.7 Dark Up 59.0 231.9 Up 07:22:00 - 07:52:00 1920
North Lake 07:36:57 -48.2 Dark Up 59.0 233.3 Up 07:21:57 - 07:51:57 1900
Paisley 07:36:55 -48.8 Dark Up 59.1 234.5 Up 07:21:55 - 07:51:55 1862
Lakeview 07:36:52 -49.3 Dark Up 59.3 235.5 Up 07:21:52 - 07:51:52 1824
Chiloquin 07:36:59 -48.7 Dark Up 59.9 232.8 Up 07:21:59 - 07:51:59 1810
Klamath Falls 07:36:57 -49.0 Dark Up 60.1 233.4 Up 07:21:57 - 07:51:57 1782
Cedarville 07:36:49 -50.0 Dark Up 59.5 236.6 Up 07:21:49 - 07:51:49 1771
Tulelake 07:36:56 -49.4 Dark Up 60.1 234.2 Up 07:21:56 - 07:51:56 1767
Fall River/Burney 07:36:52 -50.2 Dark Up 60.5 235.6 Up 07:21:52 - 07:51:52 1688
Susanville 07:36:48 -51.0 Dark Up 60.4 237.6 Up 07:21:48 - 07:51:48 1655
Gimple 07:36:47 -51.2 Dark Up 60.7 237.7 Up 07:21:47 - 07:51:47 1623
Greenville 07:36:49 -51.2 Dark Up 60.8 237.6 Up 07:21:49 - 07:51:49 1620
Portola 07:36:45 -51.6 Dark Up 60.6 238.7 Up 07:21:45 - 07:51:45 1606
Reno 07:36:42 -52.0 Dark Up 60.3 240.0 Up 07:21:42 - 07:51:42 1604
Quincy 07:36:47 -51.4 Dark Up 60.9 237.9 Up 07:21:47 - 07:51:47 1602
Yerington 07:36:38 -52.6 Dark Up 60.2 241.6 Up 07:21:38 - 07:51:38 1575
Carson City 07:36:41 -52.3 Dark Up 60.5 240.5 Up 07:21:41 - 07:51:41 1572
Tonopah 07:36:27 -53.8 Dark Up 59.3 245.4 Up 07:21:27 - 07:51:27 1557
Hawthorne 07:36:34 -53.2 Dark Up 60.0 243.0 Up 07:21:34 - 07:51:34 1551
Gardnerville 07:36:40 -52.6 Dark Up 60.6 241.0 Up 07:21:40 - 07:51:40 1551
Lee Vining 07:36:34 -53.6 Dark Up 60.6 243.3 Up 07:21:34 - 07:51:34 1482
Indian Springs 07:36:17 -55.5 Dark Up 58.7 249.3 Up 07:21:17 - 07:51:17 1476
Beatty 07:36:22 -55.0 Dark Up 59.4 247.7 Up 07:21:22 - 07:51:22 1468
Bishop 07:36:30 -54.3 Dark Up 60.4 245.1 Up 07:21:30 - 07:51:30 1453
Henderson 07:36:13 -56.0 Dark Up 58.4 250.9 Up 07:21:13 - 07:51:13 1452
Patrick 07:36:07 -56.7 Dark Up 57.8 252.9 Up 07:21:07 - 07:51:07 1436
DCO 07:36:03 -57.1 Dark Up 57.3 254.0 Up 07:21:03 - 07:51:03 1434
Kingman/Dolan Springs 07:36:07 -57.0 Dark Up 58.0 253.1 Up 07:21:07 - 07:51:07 1408
Searchlight/Boulder City 07:36:11 -56.6 Dark Up 58.6 251.8 Up 07:21:11 - 07:51:11 1402
Lone Pine 07:36:26 -55.1 Dark Up 60.5 246.7 Up 07:21:26 - 07:51:26 1394
Laughlin/Bullhead City 07:36:09 -56.9 Dark Up 58.4 252.6 Up 07:21:09 - 07:51:09 1387
Mohave Valley 07:36:08 -57.2 Dark Up 58.5 253.0 Up 07:21:08 - 07:51:08 1362
Lake Havasu City 07:36:05 -57.6 Dark Up 58.4 253.9 Up 07:21:05 - 07:51:05 1335
Parker 07:36:04 -58.0 Dark Up 58.5 254.5 Up 07:21:04 - 07:51:04 1303
Blythe 07:36:04 -58.5 Dark Up 58.8 255.0 Up 07:21:04 - 07:51:04 1243
CPSLO 07:36:33 -55.9 Dark Up 62.9 245.8 Up 07:21:33 - 07:51:33 1182
Idyllwild 07:36:12 -58.1 Dark Up 60.5 252.8 Up 07:21:12 - 07:51:12 1175
Calipatria 07:36:06 -58.9 Dark Up 59.7 255.0 Up 07:21:06 - 07:51:06 1162
Yuma 07:36:02 -59.4 Dark Up 59.1 256.5 Up 07:21:02 - 07:51:02 1155
Wildwood 07:36:21 -57.5 Dark Up 61.8 250.3 Up 07:21:21 - 07:51:21 1141

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 126154, (2019/03/15 07:38UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 15.11  54
PPM 099404     09:13:37.2 +21:17:00  6.1  1.14  39
PPM 099479     09:18:37.1 +21:33:20  9.3  0.31  40
PPM 099469     09:18:01.6 +21:23:16 11.0  0.18  40
126154         09:18:30.4 +21:14:37 13.5        40
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:18:34 UT

Marc W. Buie, Southwest Research Institute

RECON