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 09:19:29.2 +21:10:13
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 151 seconds.
The 1-sigma cross-track error in the shadow position is 1557 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 -- 25.8 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 5.0 sigma about the mid-time.
The median site spacing is 16.3 km RECON observability=1.0 and success probability=16.6%
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 07:24:05 - 07:50:14 2436
Tonasket 07:37:09 -43.1 Dark Up 54.7 228.9 Up 07:24:04 - 07:50:13 2417
Okanogan 07:37:09 -43.4 Dark Up 55.0 229.0 Up 07:24:04 - 07:50:13 2385
Brewster 07:37:08 -43.6 Dark Up 55.3 229.1 Up 07:24:04 - 07:50:13 2357
Manson/Chelan 07:37:09 -43.8 Dark Up 55.6 228.8 Up 07:24:04 - 07:50:13 2329
Entiat 07:37:08 -44.0 Dark Up 55.8 228.9 Up 07:24:04 - 07:50:13 2308
Wenatchee 07:37:08 -44.2 Dark Up 56.0 229.1 Up 07:24:03 - 07:50:12 2284
Ellensburg 07:37:07 -44.6 Dark Up 56.4 229.2 Up 07:24:02 - 07:50:11 2243
Pasco 07:37:00 -45.5 Dark Up 56.1 232.0 Up 07:23:55 - 07:50:04 2223
PNWRO 07:36:58 -45.8 Dark Up 56.1 232.6 Up 07:23:54 - 07:50:03 2209
Yakima 07:37:06 -45.0 Dark Up 56.7 229.7 Up 07:24:01 - 07:50:10 2208
Toppenish/White Swan 07:37:05 -45.2 Dark Up 56.7 230.1 Up 07:24:00 - 07:50:09 2195
George/Umatilla 07:37:00 -45.8 Dark Up 56.4 232.1 Up 07:23:55 - 07:50:04 2188
Niwot 07:35:53 -51.6 Dark Up 49.9 254.7 Up 07:22:49 - 07:48:58 2175
Goldendale 07:37:04 -45.7 Dark Up 57.3 230.2 Up 07:24:00 - 07:50:09 2135
The Dalles 07:37:05 -45.9 Dark Up 57.6 229.9 Up 07:24:01 - 07:50:10 2105
Maupin 07:37:03 -46.3 Dark Up 57.8 230.6 Up 07:23:59 - 07:50:08 2072
Madras/Culver 07:37:01 -46.8 Dark Up 58.2 231.2 Up 07:23:57 - 07:50:06 2024
Redmond 07:37:01 -47.2 Dark Up 58.5 231.6 Up 07:23:56 - 07:50:05 1991
Sisters 07:37:02 -47.1 Dark Up 58.7 231.0 Up 07:23:58 - 07:50:07 1981
Bend 07:37:00 -47.3 Dark Up 58.7 231.7 Up 07:23:56 - 07:50:05 1968
Oregon Observatory 07:37:00 -47.5 Dark Up 58.9 231.7 Up 07:23:56 - 07:50:05 1949
La Pine/Gilchrist 07:37:00 -47.7 Dark Up 59.0 231.9 Up 07:23:55 - 07:50:04 1929
North Lake 07:36:56 -48.2 Dark Up 59.0 233.3 Up 07:23:52 - 07:50:01 1909
Paisley 07:36:53 -48.8 Dark Up 59.1 234.5 Up 07:23:49 - 07:49:58 1872
Lakeview 07:36:51 -49.3 Dark Up 59.3 235.5 Up 07:23:47 - 07:49:56 1833
Chiloquin 07:36:58 -48.7 Dark Up 59.9 232.8 Up 07:23:53 - 07:50:02 1819
Klamath Falls 07:36:56 -49.0 Dark Up 60.1 233.4 Up 07:23:52 - 07:50:01 1791
Cedarville 07:36:48 -50.0 Dark Up 59.5 236.6 Up 07:23:44 - 07:49:53 1781
Tulelake 07:36:54 -49.3 Dark Up 60.1 234.2 Up 07:23:50 - 07:49:59 1777
Fall River/Burney 07:36:51 -50.2 Dark Up 60.5 235.6 Up 07:23:46 - 07:49:55 1698
Susanville 07:36:47 -51.0 Dark Up 60.4 237.6 Up 07:23:42 - 07:49:51 1665
Gimple 07:36:46 -51.2 Dark Up 60.7 237.7 Up 07:23:42 - 07:49:51 1633
Greenville 07:36:47 -51.2 Dark Up 60.8 237.6 Up 07:23:42 - 07:49:51 1630
Portola 07:36:44 -51.6 Dark Up 60.6 238.7 Up 07:23:40 - 07:49:49 1616
Reno 07:36:41 -52.0 Dark Up 60.4 240.0 Up 07:23:37 - 07:49:46 1614
Quincy 07:36:46 -51.4 Dark Up 60.9 237.9 Up 07:23:42 - 07:49:51 1612
Yerington 07:36:37 -52.6 Dark Up 60.2 241.6 Up 07:23:32 - 07:49:41 1585
Carson City 07:36:39 -52.3 Dark Up 60.5 240.5 Up 07:23:35 - 07:49:44 1582
Tonopah 07:36:27 -53.8 Dark Up 59.3 245.4 Up 07:23:22 - 07:49:31 1568
Hawthorne 07:36:33 -53.2 Dark Up 60.0 243.0 Up 07:23:29 - 07:49:38 1561
Gardnerville 07:36:38 -52.6 Dark Up 60.6 241.0 Up 07:23:34 - 07:49:43 1561
Lee Vining 07:36:33 -53.6 Dark Up 60.6 243.3 Up 07:23:29 - 07:49:38 1493
Indian Springs 07:36:17 -55.5 Dark Up 58.7 249.3 Up 07:23:12 - 07:49:21 1487
Beatty 07:36:21 -55.0 Dark Up 59.4 247.7 Up 07:23:16 - 07:49:25 1478
Bishop 07:36:28 -54.3 Dark Up 60.4 245.1 Up 07:23:24 - 07:49:33 1463
Henderson 07:36:12 -56.0 Dark Up 58.4 250.9 Up 07:23:08 - 07:49:17 1463
Patrick 07:36:06 -56.7 Dark Up 57.8 252.9 Up 07:23:01 - 07:49:10 1447
DCO 07:36:02 -57.1 Dark Up 57.3 254.0 Up 07:22:58 - 07:49:07 1445
Kingman/Dolan Springs 07:36:06 -57.0 Dark Up 58.0 253.1 Up 07:23:01 - 07:49:10 1419
Searchlight/Boulder City 07:36:10 -56.6 Dark Up 58.6 251.8 Up 07:23:06 - 07:49:15 1413
Lone Pine 07:36:25 -55.1 Dark Up 60.5 246.7 Up 07:23:20 - 07:49:29 1405
Laughlin/Bullhead City 07:36:08 -56.9 Dark Up 58.4 252.6 Up 07:23:04 - 07:49:13 1398
Mohave Valley 07:36:07 -57.2 Dark Up 58.5 253.0 Up 07:23:03 - 07:49:12 1373
Lake Havasu City 07:36:05 -57.6 Dark Up 58.4 253.9 Up 07:23:01 - 07:49:10 1345
Parker 07:36:03 -58.0 Dark Up 58.5 254.4 Up 07:22:59 - 07:49:08 1314
Blythe 07:36:03 -58.5 Dark Up 58.8 255.0 Up 07:22:59 - 07:49:08 1254
CPSLO 07:36:31 -55.9 Dark Up 62.9 245.8 Up 07:23:27 - 07:49:36 1192
Idyllwild 07:36:12 -58.1 Dark Up 60.5 252.8 Up 07:23:07 - 07:49:16 1187
Calipatria 07:36:05 -58.9 Dark Up 59.7 255.0 Up 07:23:01 - 07:49:10 1173
Yuma 07:36:00 -59.4 Dark Up 59.1 256.5 Up 07:22:56 - 07:49:05 1166
Wildwood 07:36:20 -57.5 Dark Up 61.8 250.3 Up 07:23:15 - 07:49:24 1151

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 2017/04/01 16:57:40 UT

Marc W. Buie, Southwest Research Institute

RECON