RECON: TNO occultation with 54598

Event between (54598) Bienor and star GA1300:01103922 with event index number of 166686

Geocentric closest approach at 2018/11/26 05:36:31 UTC

J2000 position of star is 03:29:16.7 +41:41:30
Equinox of date position of star is 03:30:30.7 +41:45:15
Stellar brightness G=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 38 seconds.
The 1-sigma cross-track error in the shadow position is 601 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 05:37UT)
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          03:30:32.6 +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 23.6 km RECON observability=1.0 and success probability=0.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 05:37:29 -51.8 Dark Up 72.6 108.2 Up 05:33:51 - 05:41:08 4348
Oroville 05:37:30 -52.2 Dark Up 72.8 106.5 Up 05:33:52 - 05:41:09 4288
Tonasket 05:37:30 -52.4 Dark Up 72.9 105.8 Up 05:33:52 - 05:41:09 4266
Okanogan 05:37:32 -52.5 Dark Up 72.9 104.6 Up 05:33:54 - 05:41:11 4240
Brewster 05:37:34 -52.5 Dark Up 72.8 103.5 Up 05:33:55 - 05:41:12 4222
Manson/Chelan 05:37:35 -52.5 Dark Up 72.6 102.4 Up 05:33:56 - 05:41:13 4216
Entiat 05:37:36 -52.5 Dark Up 72.6 101.6 Up 05:33:57 - 05:41:14 4198
Wenatchee 05:37:37 -52.6 Dark Up 72.6 100.7 Up 05:33:58 - 05:41:15 4178
Ellensburg 05:37:38 -52.7 Dark Up 72.6 99.2 Up 05:34:00 - 05:41:17 4148
Yakima 05:37:40 -53.0 Dark Up 72.6 97.9 Up 05:34:01 - 05:41:18 4111
Toppenish/White Swan 05:37:40 -53.2 Dark Up 72.8 97.4 Up 05:34:01 - 05:41:18 4084
Goldendale 05:37:42 -53.2 Dark Up 72.5 95.2 Up 05:34:04 - 05:41:21 4049
The Dalles 05:37:44 -53.1 Dark Up 72.3 94.2 Up 05:34:06 - 05:41:23 4042
Pasco 05:37:36 -54.0 Dark Up 73.6 98.3 Up 05:33:58 - 05:41:15 4024
George/Umatilla 05:37:38 -54.0 Dark Up 73.5 96.9 Up 05:33:59 - 05:41:16 4000
Maupin 05:37:45 -53.4 Dark Up 72.4 92.9 Up 05:34:06 - 05:41:23 3999
PNWRO 05:37:36 -54.2 Dark Up 73.8 97.7 Up 05:33:58 - 05:41:15 3992
Madras/Culver 05:37:46 -53.6 Dark Up 72.4 91.2 Up 05:34:08 - 05:41:25 3949
Sisters 05:37:48 -53.5 Dark Up 72.1 89.8 Up 05:34:10 - 05:41:27 3936
Redmond 05:37:48 -53.8 Dark Up 72.4 90.0 Up 05:34:09 - 05:41:26 3917
Bend 05:37:48 -53.8 Dark Up 72.3 89.3 Up 05:34:10 - 05:41:27 3903
Oregon Observatory 05:37:49 -53.8 Dark Up 72.2 88.6 Up 05:34:11 - 05:41:28 3892
La Pine/Gilchrist 05:37:50 -53.9 Dark Up 72.1 88.0 Up 05:34:11 - 05:41:28 3875
North Lake 05:37:49 -54.5 Dark Up 72.5 87.0 Up 05:34:11 - 05:41:28 3809
Chiloquin 05:37:54 -54.2 Dark Up 71.8 84.4 Up 05:34:15 - 05:41:32 3785
Klamath Falls 05:37:55 -54.4 Dark Up 71.8 83.4 Up 05:34:16 - 05:41:33 3750
Paisley 05:37:50 -55.0 Dark Up 72.8 85.4 Up 05:34:11 - 05:41:28 3742
Tulelake 05:37:55 -54.7 Dark Up 72.0 82.7 Up 05:34:16 - 05:41:33 3712
Lakeview 05:37:51 -55.3 Dark Up 72.9 83.8 Up 05:34:12 - 05:41:29 3686
Fall River/Burney 05:37:57 -55.1 Dark Up 71.9 79.9 Up 05:34:18 - 05:41:35 3622
Cedarville 05:37:52 -55.7 Dark Up 72.9 81.8 Up 05:34:13 - 05:41:30 3616
Susanville 05:37:56 -55.9 Dark Up 72.4 78.2 Up 05:34:17 - 05:41:34 3530
Greenville 05:37:58 -55.8 Dark Up 72.1 77.3 Up 05:34:19 - 05:41:36 3517
Gimple 05:37:57 -55.9 Dark Up 72.2 77.3 Up 05:34:19 - 05:41:36 3513
Quincy 05:37:58 -55.9 Dark Up 72.1 76.7 Up 05:34:20 - 05:41:37 3497
Portola 05:37:57 -56.3 Dark Up 72.4 76.3 Up 05:34:18 - 05:41:35 3465
Reno 05:37:55 -56.9 Dark Up 72.8 75.5 Up 05:34:17 - 05:41:34 3411
Carson City 05:37:56 -57.0 Dark Up 72.7 74.4 Up 05:34:18 - 05:41:35 3376
Gardnerville 05:37:57 -57.2 Dark Up 72.7 73.7 Up 05:34:18 - 05:41:35 3350
Yerington 05:37:55 -57.6 Dark Up 73.1 73.8 Up 05:34:16 - 05:41:33 3330
Hawthorne 05:37:54 -58.1 Dark Up 73.4 72.2 Up 05:34:16 - 05:41:33 3263
Lee Vining 05:37:57 -58.0 Dark Up 72.9 70.6 Up 05:34:19 - 05:41:36 3229
Tonopah 05:37:51 -59.3 Dark Up 74.3 70.4 Up 05:34:12 - 05:41:29 3158
Bishop 05:37:56 -58.8 Dark Up 73.2 68.5 Up 05:34:17 - 05:41:34 3140
Lone Pine 05:37:57 -59.3 Dark Up 73.1 66.1 Up 05:34:18 - 05:41:35 3052
CPSLO 05:38:09 -57.8 Dark Up 70.7 63.6 Up 05:34:30 - 05:41:47 3042
Beatty 05:37:52 -60.1 Dark Up 74.2 66.3 Up 05:34:13 - 05:41:30 3026
Indian Springs 05:37:49 -61.0 Dark Up 74.8 64.6 Up 05:34:10 - 05:41:27 2949
Niwot 05:37:05 -65.6 Dark Up 83.7 72.9 Up 05:33:26 - 05:40:43 2928
Henderson 05:37:48 -61.8 Dark Up 75.1 62.3 Up 05:34:09 - 05:41:26 2867
Wildwood 05:38:04 -59.8 Dark Up 71.6 59.3 Up 05:34:26 - 05:41:43 2832
Searchlight/Boulder City 05:37:48 -62.1 Dark Up 74.9 60.4 Up 05:34:10 - 05:41:27 2808
Laughlin/Bullhead City 05:37:48 -62.4 Dark Up 75.0 59.1 Up 05:34:10 - 05:41:27 2764
Patrick 05:37:45 -62.9 Dark Up 75.6 59.2 Up 05:34:06 - 05:41:23 2760
Kingman/Dolan Springs 05:37:46 -62.8 Dark Up 75.3 58.6 Up 05:34:08 - 05:41:25 2745
Mohave Valley 05:37:48 -62.6 Dark Up 74.8 58.2 Up 05:34:10 - 05:41:27 2737
Idyllwild 05:37:59 -61.4 Dark Up 72.7 56.9 Up 05:34:20 - 05:41:37 2713
DCO 05:37:43 -63.5 Dark Up 75.9 57.4 Up 05:34:05 - 05:41:22 2701
Lake Havasu City 05:37:48 -62.9 Dark Up 74.8 56.7 Up 05:34:10 - 05:41:27 2687
Parker 05:37:49 -63.1 Dark Up 74.6 55.6 Up 05:34:11 - 05:41:28 2651
Blythe 05:37:52 -63.0 Dark Up 74.1 54.4 Up 05:34:13 - 05:41:30 2611
Calipatria 05:37:56 -62.5 Dark Up 73.2 54.1 Up 05:34:17 - 05:41:34 2602
Yuma 05:37:53 -63.3 Dark Up 73.5 51.9 Up 05:34:15 - 05:41:32 2522

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 05:37UT)
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 2018/06/05 16:35:50 UT

Marc W. Buie, Southwest Research Institute

RECON