RECON: TNO occultation with 145451

Event between (145451) 05RM43 and star UC4-534-010144 with event index number of 170653

Geocentric closest approach at 2018/12/24 02:23:19 UTC

J2000 position of star is 04:52:51.2 +16:45:24
Equinox of date position of star is 04:53:52.1 +16:47:05
Stellar brightness R=13.5, use SENSEUP=32
Star is 37 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=20.2

[RECON map]
TNO is 37.0 AU from the Sun and 36.0 AU from the Earth.
The TNO is moving 23.7 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 82 seconds.
The 1-sigma cross-track error in the shadow position is 1666 km.
The sky-plane scale is 26145.0 km/arcsec.

The TNO has an absolute magnitude Hv=4.5
Diameter=758.6 km assuming a 5% albedo -- 32.0 sec chord
Diameter=309.7 km assuming a 30% albedo -- 13.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 145451, (2018/12/24 02:23UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.7 +16:32:46  0.8  4.06  41
Bellatrix      05:26:09.0 +06:21:55  1.6 13.06  34
PPM 120426     04:58:28.2 +17:10:54  6.3  1.15  36
PPM 120367     04:55:08.9 +17:03:23  7.5  0.39  37
PPM 120358     04:54:37.5 +16:51:06 10.8  0.17  37
145451         04:53:56.9 +16:47:13 13.5        37
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 20.8 km RECON observability=1.0 and success probability=23.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 02:26:05 -22.1 Dark Up 29.8 98.8 Low 02:18:46 - 02:33:23 1998
Tonasket 02:26:05 -22.0 Dark Up 29.9 98.6 Low 02:18:47 - 02:33:24 1978
Okanogan 02:26:07 -21.9 Dark Up 29.8 98.3 Low 02:18:48 - 02:33:25 1952
Brewster 02:26:08 -21.7 Dark Up 29.7 98.0 Low 02:18:49 - 02:33:26 1933
Manson/Chelan 02:26:09 -21.4 Dark Up 29.5 97.6 Low 02:18:50 - 02:33:27 1921
Entiat 02:26:10 -21.3 Dark Up 29.5 97.4 Low 02:18:51 - 02:33:28 1904
Wenatchee 02:26:11 -21.2 Dark Up 29.5 97.2 Low 02:18:52 - 02:33:29 1884
Ellensburg 02:26:12 -21.0 Dark Up 29.4 96.8 Low 02:18:54 - 02:33:31 1852
Yakima 02:26:14 -20.9 Dark Up 29.4 96.6 Low 02:18:55 - 02:33:32 1817
Toppenish/White Swan 02:26:14 -20.9 Dark Up 29.6 96.6 Low 02:18:55 - 02:33:32 1795
Pasco 02:26:12 -21.8 Dark Up 30.4 97.5 Up 02:18:54 - 02:33:31 1761
Goldendale 02:26:16 -20.5 Dark Up 29.3 96.0 Low 02:18:57 - 02:33:34 1755
The Dalles 02:26:17 -20.2 Dark Up 29.1 95.6 Low 02:18:58 - 02:33:35 1742
George/Umatilla 02:26:14 -21.6 Dark Up 30.3 97.1 Up 02:18:55 - 02:33:32 1736
PNWRO 02:26:13 -21.9 Dark Up 30.6 97.5 Up 02:18:54 - 02:33:31 1736
Maupin 02:26:18 -20.2 Dark Up 29.2 95.4 Low 02:19:00 - 02:33:37 1703
Madras/Culver 02:26:19 -20.1 Dark Up 29.2 95.1 Low 02:19:00 - 02:33:37 1656
Sisters 02:26:21 -19.7 Dark Up 29.0 94.6 Low 02:19:02 - 02:33:39 1635
Redmond 02:26:20 -20.0 Dark Up 29.2 94.8 Low 02:19:02 - 02:33:39 1625
Bend 02:26:22 -19.8 Dark Up 29.2 94.6 Low 02:19:03 - 02:33:40 1609
Oregon Observatory 02:26:22 -19.7 Dark Up 29.1 94.4 Low 02:19:03 - 02:33:40 1596
La Pine/Gilchrist 02:26:22 -19.6 Dark Up 29.1 94.3 Low 02:19:04 - 02:33:41 1579
North Lake 02:26:22 -19.9 Dark Up 29.5 94.5 Low 02:19:04 - 02:33:41 1528
Chiloquin 02:26:26 -19.1 Dark Up 28.9 93.4 Low 02:19:07 - 02:33:44 1486
Paisley 02:26:24 -20.0 Dark Up 29.8 94.4 Low 02:19:05 - 02:33:42 1471
Klamath Falls 02:26:27 -19.0 Dark Up 29.0 93.3 Low 02:19:08 - 02:33:45 1453
Tulelake 02:26:27 -19.2 Dark Up 29.2 93.4 Low 02:19:08 - 02:33:45 1422
Lakeview 02:26:25 -20.1 Dark Up 30.0 94.3 Up 02:19:06 - 02:33:43 1421
Cedarville 02:26:26 -20.0 Dark Up 30.2 94.0 Up 02:19:07 - 02:33:44 1357
Fall River/Burney 02:26:29 -19.0 Dark Up 29.3 92.9 Low 02:19:11 - 02:33:48 1337
Susanville 02:26:30 -19.4 Dark Up 29.9 93.0 Low 02:19:11 - 02:33:48 1264
Greenville 02:26:31 -19.1 Dark Up 29.7 92.7 Low 02:19:12 - 02:33:49 1244
Gimple 02:26:31 -19.2 Dark Up 29.8 92.8 Low 02:19:12 - 02:33:49 1242
Quincy 02:26:31 -19.1 Dark Up 29.7 92.6 Low 02:19:13 - 02:33:50 1225
Portola 02:26:31 -19.4 Dark Up 30.1 92.8 Up 02:19:12 - 02:33:49 1204
Reno 02:26:30 -19.8 Dark Up 30.6 93.1 Up 02:19:12 - 02:33:49 1165
Carson City 02:26:31 -19.7 Dark Up 30.7 92.9 Up 02:19:13 - 02:33:50 1131
Gardnerville 02:26:32 -19.7 Dark Up 30.7 92.8 Up 02:19:14 - 02:33:51 1107
Yerington 02:26:31 -20.2 Dark Up 31.2 93.2 Up 02:19:12 - 02:33:49 1100
Hawthorne 02:26:31 -20.5 Dark Up 31.6 93.3 Up 02:19:13 - 02:33:50 1045
Lee Vining 02:26:33 -20.0 Dark Up 31.2 92.6 Up 02:19:15 - 02:33:52 1001
Tonopah 02:26:29 -21.4 Dark Up 32.7 93.9 Up 02:19:11 - 02:33:48 972
Niwot 02:26:00 -30.9 Dark Up 41.6 104.1 Up 02:18:42 - 02:33:19 954
Bishop 02:26:33 -20.4 Dark Up 31.8 92.7 Up 02:19:15 - 02:33:52 928
Beatty 02:26:31 -21.5 Dark Up 33.2 93.4 Up 02:19:13 - 02:33:50 850
Lone Pine 02:26:35 -20.4 Dark Up 32.2 92.4 Up 02:19:16 - 02:33:53 848
Indian Springs 02:26:30 -22.3 Dark Up 34.0 93.9 Up 02:19:11 - 02:33:48 796
CPSLO 02:26:42 -18.1 Dark Up 30.1 90.1 Up 02:19:24 - 02:34:01 776
Henderson 02:26:30 -22.7 Dark Up 34.6 94.0 Up 02:19:11 - 02:33:48 730
Searchlight/Boulder City 02:26:31 -22.6 Dark Up 34.7 93.6 Up 02:19:12 - 02:33:49 672
Patrick 02:26:29 -23.4 Dark Up 35.6 94.2 Up 02:19:11 - 02:33:48 646
Laughlin/Bullhead City 02:26:31 -22.8 Dark Up 35.0 93.6 Up 02:19:12 - 02:33:49 636
Kingman/Dolan Springs 02:26:30 -23.2 Dark Up 35.5 94.0 Up 02:19:11 - 02:33:48 628
Wildwood 02:26:41 -19.4 Dark Up 31.8 90.6 Up 02:19:22 - 02:33:59 613
Mohave Valley 02:26:31 -22.8 Dark Up 35.1 93.4 Up 02:19:13 - 02:33:50 609
DCO 02:26:28 -23.9 Dark Up 36.2 94.5 Up 02:19:10 - 02:33:47 602
Lake Havasu City 02:26:32 -22.9 Dark Up 35.3 93.3 Up 02:19:13 - 02:33:50 564
Idyllwild 02:26:38 -20.8 Dark Up 33.4 91.4 Up 02:19:20 - 02:33:57 537
Parker 02:26:33 -22.8 Dark Up 35.3 93.1 Up 02:19:14 - 02:33:51 528
Blythe 02:26:34 -22.4 Dark Up 35.1 92.5 Up 02:19:15 - 02:33:52 481
Calipatria 02:26:37 -21.6 Dark Up 34.4 91.7 Up 02:19:18 - 02:33:55 451
Yuma 02:26:36 -22.2 Dark Up 35.1 91.9 Up 02:19:18 - 02:33:55 389

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 145451, (2018/12/24 02:23UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  4.06  41
Bellatrix      05:25:07.8 +06:20:58  1.6 13.06  34
PPM 120426     04:57:22.2 +17:09:12  6.3  1.15  36
PPM 120367     04:54:03.1 +17:01:36  7.5  0.39  37
PPM 120358     04:53:31.8 +16:49:18 10.8  0.17  37
145451         04:52:51.2 +16:45:24 13.5        37
Positions are for J2000

Event circumstances last updated at 2017/08/04 18:03:35 UT

Marc W. Buie, Southwest Research Institute

RECON