RECON: TNO occultation with 54598

Event between (54598) Bienor and star UC4-659-016218 with event index number of 166686

Geocentric closest approach at 2018/11/26 05:34:22 UTC

J2000 position of star is 03:29:16.7 +41:41:30
Equinox of date position of star is 03:30:26.8 +41:45:03
Stellar brightness R=15.9, use SENSEUP=128
Star is 48 degrees from the moon. Moon is 88% illuminated.
TNO apparent brightness V=19.2

[RECON map]
TNO is 14.8 AU from the Sun and 13.9 AU from the Earth.
The TNO is moving 22.1 km/sec on the sky relative to the star, or, 7.9 arcsec/hr.
The 1-sigma error in the time of the event is 47 seconds.
The 1-sigma cross-track error in the shadow position is 663 km.
The sky-plane scale is 10057.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.5
Diameter=190.6 km assuming a 5% albedo -- 8.6 sec chord
Diameter=77.8 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 54598, (2018/11/26 05:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.4 +16:32:45  0.8 28.97  34
Algol          03:09:24.4 +41:01:38  2.1  4.03  52
PPM 046142     03:26:24.8 +41:19:23  6.4  0.89  49
PPM 046174     03:27:46.3 +42:20:28  8.1  0.78  49
PPM 046204     03:29:18.2 +41:44:17  9.0  0.23  48
54598          03:30:32.7 +41:45:21 15.9        48
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 23.2 km RECON observability=1.0 and success probability=6.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 05:35:22 -51.9 Dark Up 72.5 105.8 Up 05:30:58 - 05:39:47 3201
Tonasket 05:35:23 -52.1 Dark Up 72.6 105.1 Up 05:30:58 - 05:39:47 3179
Okanogan 05:35:24 -52.2 Dark Up 72.5 103.9 Up 05:30:59 - 05:39:48 3153
Brewster 05:35:25 -52.2 Dark Up 72.5 102.8 Up 05:31:01 - 05:39:50 3135
Manson/Chelan 05:35:27 -52.2 Dark Up 72.3 101.7 Up 05:31:02 - 05:39:51 3130
Entiat 05:35:28 -52.2 Dark Up 72.3 101.0 Up 05:31:03 - 05:39:52 3112
Wenatchee 05:35:29 -52.3 Dark Up 72.3 100.1 Up 05:31:04 - 05:39:53 3092
Ellensburg 05:35:30 -52.4 Dark Up 72.2 98.6 Up 05:31:06 - 05:39:55 3062
Yakima 05:35:32 -52.6 Dark Up 72.2 97.3 Up 05:31:07 - 05:39:56 3024
Toppenish/White Swan 05:35:32 -52.9 Dark Up 72.4 96.8 Up 05:31:07 - 05:39:56 2997
Goldendale 05:35:34 -52.9 Dark Up 72.2 94.7 Up 05:31:09 - 05:39:58 2962
The Dalles 05:35:36 -52.8 Dark Up 71.9 93.7 Up 05:31:11 - 05:40:00 2956
Pasco 05:35:28 -53.7 Dark Up 73.3 97.7 Up 05:31:04 - 05:39:53 2937
George/Umatilla 05:35:30 -53.7 Dark Up 73.2 96.4 Up 05:31:06 - 05:39:55 2914
Maupin 05:35:36 -53.1 Dark Up 72.0 92.5 Up 05:31:12 - 05:40:01 2912
PNWRO 05:35:28 -53.9 Dark Up 73.5 97.1 Up 05:31:04 - 05:39:53 2905
Madras/Culver 05:35:38 -53.3 Dark Up 72.0 90.8 Up 05:31:13 - 05:40:02 2863
Sisters 05:35:40 -53.2 Dark Up 71.7 89.5 Up 05:31:16 - 05:40:05 2850
Redmond 05:35:39 -53.5 Dark Up 72.0 89.7 Up 05:31:14 - 05:40:03 2831
Bend 05:35:40 -53.5 Dark Up 71.9 88.9 Up 05:31:16 - 05:40:05 2817
Oregon Observatory 05:35:41 -53.5 Dark Up 71.8 88.3 Up 05:31:17 - 05:40:06 2806
La Pine/Gilchrist 05:35:41 -53.5 Dark Up 71.7 87.6 Up 05:31:17 - 05:40:06 2789
North Lake 05:35:41 -54.1 Dark Up 72.1 86.7 Up 05:31:16 - 05:40:05 2724
Chiloquin 05:35:45 -53.8 Dark Up 71.4 84.1 Up 05:31:21 - 05:40:10 2700
Klamath Falls 05:35:47 -54.0 Dark Up 71.4 83.2 Up 05:31:22 - 05:40:11 2664
Paisley 05:35:41 -54.6 Dark Up 72.4 85.1 Up 05:31:17 - 05:40:06 2657
Tulelake 05:35:47 -54.3 Dark Up 71.6 82.5 Up 05:31:22 - 05:40:11 2626
Lakeview 05:35:42 -55.0 Dark Up 72.5 83.6 Up 05:31:17 - 05:40:06 2601
Fall River/Burney 05:35:48 -54.8 Dark Up 71.5 79.8 Up 05:31:24 - 05:40:13 2537
Cedarville 05:35:43 -55.4 Dark Up 72.5 81.6 Up 05:31:19 - 05:40:08 2531
Susanville 05:35:48 -55.5 Dark Up 72.0 78.1 Up 05:31:23 - 05:40:12 2445
Greenville 05:35:49 -55.5 Dark Up 71.7 77.2 Up 05:31:25 - 05:40:14 2431
Gimple 05:35:49 -55.5 Dark Up 71.8 77.2 Up 05:31:24 - 05:40:13 2428
Quincy 05:35:50 -55.5 Dark Up 71.7 76.6 Up 05:31:25 - 05:40:14 2412
Portola 05:35:48 -55.9 Dark Up 72.0 76.3 Up 05:31:24 - 05:40:13 2379
Reno 05:35:47 -56.5 Dark Up 72.4 75.5 Up 05:31:23 - 05:40:12 2326
Carson City 05:35:48 -56.6 Dark Up 72.3 74.4 Up 05:31:24 - 05:40:13 2291
Gardnerville 05:35:48 -56.8 Dark Up 72.3 73.7 Up 05:31:24 - 05:40:13 2265
Yerington 05:35:47 -57.2 Dark Up 72.7 73.8 Up 05:31:22 - 05:40:11 2245
Hawthorne 05:35:46 -57.7 Dark Up 73.0 72.3 Up 05:31:21 - 05:40:10 2177
Lee Vining 05:35:49 -57.6 Dark Up 72.5 70.7 Up 05:31:24 - 05:40:13 2144
Tonopah 05:35:42 -58.9 Dark Up 73.9 70.5 Up 05:31:18 - 05:40:07 2072
Bishop 05:35:48 -58.4 Dark Up 72.8 68.7 Up 05:31:24 - 05:40:13 2055
Lone Pine 05:35:48 -58.9 Dark Up 72.8 66.3 Up 05:31:24 - 05:40:13 1966
CPSLO 05:36:00 -57.4 Dark Up 70.3 63.9 Up 05:31:36 - 05:40:25 1957
Beatty 05:35:43 -59.7 Dark Up 73.8 66.6 Up 05:31:19 - 05:40:08 1940
Indian Springs 05:35:41 -60.7 Dark Up 74.5 65.0 Up 05:31:16 - 05:40:05 1863
Niwot 05:34:57 -65.3 Dark Up 83.3 73.6 Up 05:30:32 - 05:39:21 1839
Henderson 05:35:40 -61.4 Dark Up 74.7 62.7 Up 05:31:15 - 05:40:04 1781
Wildwood 05:35:56 -59.4 Dark Up 71.2 59.7 Up 05:31:32 - 05:40:21 1747
Searchlight/Boulder City 05:35:40 -61.7 Dark Up 74.5 60.9 Up 05:31:16 - 05:40:05 1722
Laughlin/Bullhead City 05:35:40 -62.0 Dark Up 74.6 59.6 Up 05:31:15 - 05:40:04 1678
Patrick 05:35:37 -62.5 Dark Up 75.2 59.7 Up 05:31:12 - 05:40:01 1674
Kingman/Dolan Springs 05:35:38 -62.4 Dark Up 75.0 59.2 Up 05:31:13 - 05:40:02 1659
Mohave Valley 05:35:40 -62.2 Dark Up 74.5 58.8 Up 05:31:16 - 05:40:05 1651
Idyllwild 05:35:51 -60.9 Dark Up 72.4 57.3 Up 05:31:26 - 05:40:15 1628
DCO 05:35:35 -63.1 Dark Up 75.5 58.0 Up 05:31:11 - 05:40:00 1614
Lake Havasu City 05:35:40 -62.5 Dark Up 74.4 57.3 Up 05:31:16 - 05:40:05 1601
Parker 05:35:41 -62.7 Dark Up 74.3 56.2 Up 05:31:17 - 05:40:06 1565
Blythe 05:35:43 -62.6 Dark Up 73.8 55.0 Up 05:31:19 - 05:40:08 1526
Calipatria 05:35:48 -62.1 Dark Up 72.8 54.6 Up 05:31:23 - 05:40:12 1517
Yuma 05:35:45 -62.9 Dark Up 73.2 52.5 Up 05:31:20 - 05:40:09 1436

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 54598, (2018/11/26 05:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 28.97  34
Algol          03:08:10.1 +40:57:20  2.1  4.03  52
PPM 046142     03:25:09.4 +41:15:27  6.4  0.89  49
PPM 046174     03:26:30.1 +42:16:33  8.1  0.78  49
PPM 046204     03:28:02.3 +41:40:25  9.0  0.23  48
54598          03:29:16.7 +41:41:30 15.9        48
Positions are for J2000

Event circumstances last updated at 2017/06/14 17:02:42 UT

Marc W. Buie, Southwest Research Institute

RECON