RECON: TNO occultation with 523644

Event between (523644) 10VX11 and star GA0880:00557823 with event index number of 325871

Geocentric closest approach at 2018/12/25 07:03:54 UTC

J2000 position of star is 05:08:50.1 -00:10:21
Equinox of date position of star is 05:09:47.8 -00:08:58
Stellar brightness G=16.5, use SENSEUP=128
Star is 57 degrees from the moon. Moon is 91% illuminated.
TNO apparent brightness V=21.0

[RECON map]
TNO is 28.8 AU from the Sun and 28.0 AU from the Earth.
The TNO is moving 23.0 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 74 seconds.
The 1-sigma cross-track error in the shadow position is 1019 km.
The sky-plane scale is 20273.4 km/arcsec.

The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 13.8 sec chord
Diameter=129.1 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523644, (2018/12/25 07:04UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:27.1 -08:10:52  0.1  8.15  59
67Bet Eri      05:08:47.0 -05:03:48  2.8  4.92  59
PPM 187787     05:12:16.6 -02:28:07  6.0  2.40  57
PPM 148461     05:08:04.3 +00:06:46  8.2  0.51  57
PPM 175750     05:11:06.1 -00:15:37  9.8  0.34  56
PPM 175737     05:09:27.6 -00:12:54 10.5  0.11  57
523644         05:09:48.4 -00:08:57 16.5        56
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 18.8 km RECON observability=1.0 and success probability=0.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:03:56 -61.5 Dark Up 39.9 184.1 Up 06:57:15 - 07:10:37 5215
Summerland 07:03:57 -61.4 Dark Up 39.9 183.6 Up 06:57:16 - 07:10:38 5210
Penticton 07:03:56 -61.8 Dark Up 40.2 183.9 Up 06:57:15 - 07:10:37 5188
Okanagan Falls 07:03:56 -61.9 Dark Up 40.4 183.9 Up 06:57:15 - 07:10:37 5174
Oliver 07:03:56 -62.1 Dark Up 40.6 183.9 Up 06:57:15 - 07:10:37 5163
Anarchist Mountain Observatory 07:03:55 -62.3 Dark Up 40.7 184.2 Up 06:57:14 - 07:10:36 5151
Oroville 07:03:56 -62.3 Dark Up 40.8 184.1 Up 06:57:15 - 07:10:37 5145
Tonasket 07:03:56 -62.6 Dark Up 41.1 184.1 Up 06:57:15 - 07:10:37 5128
Okanogan 07:03:56 -62.8 Dark Up 41.4 183.9 Up 06:57:15 - 07:10:37 5103
Brewster 07:03:57 -63.0 Dark Up 41.7 183.7 Up 06:57:16 - 07:10:38 5082
Manson/Chelan 07:03:58 -63.0 Dark Up 41.9 183.2 Up 06:57:17 - 07:10:39 5066
Entiat 07:03:58 -63.2 Dark Up 42.1 183.1 Up 06:57:17 - 07:10:39 5049
Wenatchee 07:03:58 -63.4 Dark Up 42.4 183.0 Up 06:57:17 - 07:10:39 5030
Ellensburg 07:03:59 -63.7 Dark Up 42.8 182.7 Up 06:57:18 - 07:10:40 4998
Yakima 07:03:58 -64.0 Dark Up 43.2 182.7 Up 06:57:17 - 07:10:39 4967
Toppenish/White Swan 07:03:58 -64.3 Dark Up 43.4 182.9 Up 06:57:17 - 07:10:39 4951
Pasco 07:03:54 -64.8 Dark Up 43.5 184.7 Up 06:57:13 - 07:10:35 4947
PNWRO 07:03:53 -65.1 Dark Up 43.7 185.0 Up 06:57:12 - 07:10:34 4929
George/Umatilla 07:03:54 -65.0 Dark Up 43.8 184.4 Up 06:57:13 - 07:10:35 4920
Goldendale 07:03:59 -64.6 Dark Up 44.0 182.4 Up 06:57:18 - 07:10:40 4907
The Dalles 07:04:01 -64.6 Dark Up 44.2 181.9 Up 06:57:20 - 07:10:42 4888
Maupin 07:04:00 -65.0 Dark Up 44.6 182.1 Up 06:57:19 - 07:10:41 4856
Madras/Culver 07:04:00 -65.4 Dark Up 45.2 182.0 Up 06:57:19 - 07:10:41 4813
Sisters 07:04:01 -65.5 Dark Up 45.5 181.4 Up 06:57:20 - 07:10:42 4785
Redmond 07:04:00 -65.7 Dark Up 45.5 182.0 Up 06:57:19 - 07:10:41 4785
Bend 07:04:01 -65.8 Dark Up 45.8 181.8 Up 06:57:20 - 07:10:42 4767
Oregon Observatory 07:04:01 -65.9 Dark Up 45.9 181.6 Up 06:57:20 - 07:10:42 4753
La Pine/Gilchrist 07:04:01 -66.0 Dark Up 46.1 181.5 Up 06:57:20 - 07:10:42 4736
North Lake 07:03:59 -66.7 Dark Up 46.6 182.4 Up 06:57:18 - 07:10:40 4704
Paisley 07:03:58 -67.3 Dark Up 47.1 182.9 Up 06:57:17 - 07:10:39 4661
Chiloquin 07:04:02 -66.8 Dark Up 47.3 181.0 Up 06:57:21 - 07:10:43 4645
Lakeview 07:03:57 -67.7 Dark Up 47.6 183.2 Up 06:57:16 - 07:10:38 4620
Klamath Falls 07:04:02 -67.1 Dark Up 47.6 181.1 Up 06:57:21 - 07:10:43 4617
Tulelake 07:04:01 -67.4 Dark Up 47.9 181.6 Up 06:57:20 - 07:10:42 4596
Cedarville 07:03:56 -68.3 Dark Up 48.2 183.5 Up 06:57:15 - 07:10:37 4567
Fall River/Burney 07:04:00 -68.1 Dark Up 48.8 181.7 Up 06:57:19 - 07:10:41 4521
Niwot 07:03:01 -73.3 Dark Up 46.8 205.5 Up 06:56:20 - 07:09:42 4510
Susanville 07:03:57 -69.0 Dark Up 49.4 182.9 Up 06:57:16 - 07:10:38 4472
Gimple 07:03:58 -69.1 Dark Up 49.7 182.6 Up 06:57:17 - 07:10:39 4447
Greenville 07:03:58 -69.0 Dark Up 49.7 182.4 Up 06:57:17 - 07:10:39 4447
Quincy 07:03:58 -69.2 Dark Up 49.9 182.5 Up 06:57:17 - 07:10:39 4430
Portola 07:03:57 -69.5 Dark Up 50.0 183.2 Up 06:57:16 - 07:10:38 4421
Reno 07:03:54 -70.1 Dark Up 50.2 184.2 Up 06:57:13 - 07:10:35 4402
Carson City 07:03:54 -70.3 Dark Up 50.6 184.3 Up 06:57:13 - 07:10:35 4371
Yerington 07:03:51 -70.8 Dark Up 50.7 185.3 Up 06:57:10 - 07:10:32 4357
Gardnerville 07:03:54 -70.5 Dark Up 50.8 184.4 Up 06:57:13 - 07:10:35 4350
Hawthorne 07:03:49 -71.4 Dark Up 51.1 186.2 Up 06:57:08 - 07:10:30 4319
Tonopah 07:03:44 -72.5 Dark Up 51.5 188.5 Up 06:57:03 - 07:10:25 4285
Lee Vining 07:03:51 -71.6 Dark Up 51.7 185.5 Up 06:57:10 - 07:10:32 4268
Bishop 07:03:48 -72.4 Dark Up 52.3 186.7 Up 06:57:07 - 07:10:29 4219
Beatty 07:03:42 -73.6 Dark Up 52.6 189.4 Up 06:57:01 - 07:10:23 4186
Indian Springs 07:03:37 -74.4 Dark Up 52.7 191.2 Up 06:56:56 - 07:10:18 4162
Lone Pine 07:03:46 -73.2 Dark Up 53.0 187.4 Up 06:57:05 - 07:10:27 4153
Henderson 07:03:34 -75.1 Dark Up 53.1 192.5 Up 06:56:53 - 07:10:15 4117
Searchlight/Boulder City 07:03:34 -75.6 Dark Up 53.7 192.8 Up 06:56:53 - 07:10:15 4066
Patrick 07:03:30 -76.1 Dark Up 53.5 194.5 Up 06:56:49 - 07:10:11 4066
Kingman/Dolan Springs 07:03:30 -76.2 Dark Up 53.8 194.3 Up 06:56:49 - 07:10:11 4045
DCO 07:03:27 -76.7 Dark Up 53.7 195.7 Up 06:56:46 - 07:10:08 4042
Laughlin/Bullhead City 07:03:32 -76.0 Dark Up 53.9 193.4 Up 06:56:51 - 07:10:13 4041
CPSLO 07:03:56 -72.6 Dark Up 54.5 183.2 Up 06:57:15 - 07:10:37 4026
Mohave Valley 07:03:32 -76.2 Dark Up 54.2 193.5 Up 06:56:51 - 07:10:13 4016
Lake Havasu City 07:03:31 -76.7 Dark Up 54.5 194.1 Up 06:56:50 - 07:10:12 3981
Parker 07:03:31 -77.0 Dark Up 54.8 194.2 Up 06:56:50 - 07:10:12 3949
Wildwood 07:03:47 -74.6 Dark Up 55.5 186.9 Up 06:57:06 - 07:10:28 3925
Idyllwild 07:03:40 -76.0 Dark Up 55.7 190.2 Up 06:56:59 - 07:10:21 3901
Blythe 07:03:32 -77.3 Dark Up 55.4 193.9 Up 06:56:51 - 07:10:13 3900
Calipatria 07:03:35 -77.1 Dark Up 56.1 192.5 Up 06:56:54 - 07:10:16 3851
Yuma 07:03:31 -77.9 Dark Up 56.3 194.2 Up 06:56:50 - 07:10:12 3815

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 523644, (2018/12/25 07:04UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1  8.15  59
67Bet Eri      05:07:50.9 -05:05:13  2.8  4.92  59
PPM 187787     05:11:19.3 -02:29:27  6.0  2.40  57
PPM 148461     05:07:05.9 +00:05:20  8.2  0.51  57
PPM 175750     05:10:07.8 -00:16:59  9.8  0.34  56
PPM 175737     05:08:29.4 -00:14:18 10.5  0.11  57
523644         05:08:50.1 -00:10:21 16.5        57
Positions are for J2000

Event circumstances last updated at 2018/10/23 20:47:41 UT

Marc W. Buie, Southwest Research Institute

RECON