RECON: TNO occultation with 500888

Event between (500888) 13JP65 and star GA0780:05237306 with event index number of 266574

Geocentric closest approach at 2020/05/18 11:14:28 UTC

J2000 position of star is 16:25:47.1 -11:07:07
Equinox of date position of star is 16:26:48.2 -11:09:33
Stellar brightness G=15.8, use SENSEUP=128
Star is 125 degrees from the moon. Moon is 16% illuminated.
TNO apparent brightness V=24.1

[RECON map]
TNO is 40.7 AU from the Sun and 39.7 AU from the Earth.
The TNO is moving 24.4 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 253 seconds.
The 1-sigma cross-track error in the shadow position is 2840 km.
The sky-plane scale is 28786.2 km/arcsec.

The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 6.2 sec chord
Diameter=61.8 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 500888, (2020/05/18 11:14UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.6 -26:28:32  0.9 15.34 120
13Zet Oph      16:38:17.0 -10:36:25  2.6  2.85 122
3Ups Oph       16:28:54.4 -08:24:57  4.2  2.79 124
PPM 231692     16:27:26.3 -11:31:52  8.5  0.39 124
PPM 231701     16:28:03.1 -11:05:22  9.7  0.29 124
500888         16:26:54.7 -11:09:49 15.8       124
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 3.6 sigma about the mid-time.
The median site spacing is 28.4 km RECON observability=0.3 and success probability=4.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 11:13:32 -8.0 CT Up 20.4 221.2 Low 10:58:32 - 11:28:32 -1441
Oroville 11:13:30 -8.3 CT Up 20.8 221.4 Low 10:58:30 - 11:28:30 -1468
Tonasket 11:13:29 -8.5 CT Up 21.0 221.5 Low 10:58:29 - 11:28:29 -1478
Okanogan 11:13:29 -8.8 CT Up 21.3 221.4 Low 10:58:29 - 11:28:29 -1495
Brewster 11:13:29 -9.1 CT Up 21.6 221.3 Low 10:58:29 - 11:28:29 -1508
Manson/Chelan 11:13:29 -9.4 CT Up 21.9 221.0 Low 10:58:29 - 11:28:29 -1520
Entiat 11:13:29 -9.6 CT Up 22.1 221.0 Low 10:58:29 - 11:28:29 -1531
Wenatchee 11:13:29 -9.8 CT Up 22.3 221.0 Low 10:58:29 - 11:28:29 -1544
Ellensburg 11:13:28 -10.2 CT Up 22.7 220.9 Low 10:58:28 - 11:28:28 -1565
Yakima 11:13:27 -10.5 CT Up 23.1 221.0 Low 10:58:27 - 11:28:27 -1585
Toppenish/White Swan 11:13:26 -10.6 CT Up 23.1 221.2 Low 10:58:26 - 11:28:26 -1595
Pasco 11:13:22 -10.0 CT Up 22.7 222.4 Low 10:58:22 - 11:28:22 -1596
PNWRO 11:13:22 -10.1 CT Up 22.7 222.7 Low 10:58:22 - 11:28:22 -1608
George/Umatilla 11:13:22 -10.4 CT Up 23.0 222.3 Low 10:58:22 - 11:28:22 -1614
Goldendale 11:13:26 -11.2 CT Up 23.8 221.0 Low 10:58:26 - 11:28:26 -1626
The Dalles 11:13:26 -11.5 CT Up 24.1 220.7 Low 10:58:26 - 11:28:26 -1639
Maupin 11:13:25 -11.7 CT Up 24.4 220.9 Low 10:58:25 - 11:28:25 -1660
Madras/Culver 11:13:24 -12.1 AT Up 24.8 221.0 Low 10:58:24 - 11:28:24 -1690
Redmond 11:13:23 -12.4 AT Up 25.1 221.1 Low 10:58:23 - 11:28:23 -1709
Sisters 11:13:24 -12.6 AT Up 25.3 220.7 Low 10:58:24 - 11:28:24 -1710
Bend 11:13:23 -12.6 AT Up 25.3 221.0 Low 10:58:23 - 11:28:23 -1722
Oregon Observatory 11:13:23 -12.8 AT Up 25.5 220.9 Low 10:58:23 - 11:28:23 -1732
La Pine/Gilchrist 11:13:22 -13.0 AT Up 25.7 220.9 Low 10:58:22 - 11:28:22 -1743
North Lake 11:13:20 -13.0 AT Up 25.7 221.6 Low 10:58:20 - 11:28:20 -1765
Paisley 11:13:18 -13.2 AT Up 26.0 222.2 Low 10:58:18 - 11:28:18 -1794
Chiloquin 11:13:20 -14.0 AT Up 26.7 220.9 Low 10:58:20 - 11:28:20 -1808
Lakeview 11:13:16 -13.4 AT Up 26.3 222.5 Low 10:58:16 - 11:28:16 -1822
Klamath Falls 11:13:20 -14.2 AT Up 26.9 221.1 Low 10:58:20 - 11:28:20 -1827
Tulelake 11:13:18 -14.2 AT Up 27.0 221.5 Low 10:58:18 - 11:28:18 -1841
Cedarville 11:13:14 -13.8 AT Up 26.7 222.9 Low 10:58:14 - 11:28:14 -1860
Fall River/Burney 11:13:16 -14.8 AT Up 27.6 221.9 Low 10:58:16 - 11:28:16 -1894
Niwot 11:12:33 -5.7 CT Up 19.0 236.1 Really Low 10:57:33 - 11:27:33 -1921
Susanville 11:13:12 -14.8 AT Up 27.7 222.8 Low 10:58:12 - 11:28:12 -1928
Gimple 11:13:12 -15.1 AT Up 28.0 222.7 Low 10:58:12 - 11:28:12 -1946
Greenville 11:13:12 -15.2 AT Up 28.1 222.6 Low 10:58:12 - 11:28:12 -1947
Quincy 11:13:12 -15.3 AT Up 28.2 222.7 Low 10:58:12 - 11:28:12 -1959
Portola 11:13:11 -15.1 AT Up 28.1 223.2 Low 10:58:11 - 11:28:11 -1964
Reno 11:13:08 -15.0 AT Up 27.9 223.9 Low 10:58:08 - 11:28:08 -1978
Carson City 11:13:08 -15.2 AT Up 28.2 224.0 Low 10:58:08 - 11:28:08 -2000
Yerington 11:13:05 -15.0 AT Up 28.0 224.7 Low 10:58:05 - 11:28:05 -2009
Gardnerville 11:13:07 -15.3 AT Up 28.3 224.2 Low 10:58:07 - 11:28:07 -2015
Hawthorne 11:13:02 -15.0 AT Up 28.0 225.3 Low 10:58:02 - 11:28:02 -2036
Tonopah 11:12:57 -14.4 AT Up 27.6 226.8 Low 10:57:57 - 11:27:57 -2061
Lee Vining 11:13:02 -15.6 AT Up 28.7 225.1 Low 10:58:02 - 11:28:02 -2075
Bishop 11:12:59 -15.6 AT Up 28.7 226.0 Low 10:57:59 - 11:27:59 -2110
Beatty 11:12:53 -14.9 AT Up 28.1 227.6 Low 10:57:53 - 11:27:53 -2134
Indian Springs 11:12:49 -14.5 AT Up 27.7 228.7 Low 10:57:49 - 11:27:49 -2152
Lone Pine 11:12:56 -15.9 AT Up 29.0 226.6 Low 10:57:56 - 11:27:56 -2159
Henderson 11:12:46 -14.4 AT Up 27.6 229.5 Low 10:57:46 - 11:27:46 -2186
Searchlight/Boulder City 11:12:45 -14.7 AT Up 27.9 229.8 Low 10:57:45 - 11:27:45 -2225
Patrick 11:12:42 -14.0 AT Up 27.3 230.7 Low 10:57:42 - 11:27:42 -2226
Kingman/Dolan Springs 11:12:42 -14.3 AT Up 27.6 230.6 Low 10:57:42 - 11:27:42 -2241
Laughlin/Bullhead City 11:12:43 -14.6 AT Up 27.9 230.2 Low 10:57:43 - 11:27:43 -2244
DCO 11:12:39 -13.8 AT Up 27.1 231.4 Low 10:57:39 - 11:27:39 -2245
CPSLO 11:13:00 -18.3 Dark Up 31.5 224.8 Up 10:58:00 - 11:28:00 -2259
Mohave Valley 11:12:42 -14.8 AT Up 28.1 230.3 Low 10:57:42 - 11:27:42 -2263
Lake Havasu City 11:12:41 -14.9 AT Up 28.2 230.7 Low 10:57:41 - 11:27:41 -2290
Parker 11:12:40 -15.1 AT Up 28.4 230.8 Low 10:57:40 - 11:27:40 -2314
Wildwood 11:12:52 -17.9 AT Up 31.1 227.1 Up 10:57:52 - 11:27:52 -2333
Idyllwild 11:12:46 -16.9 AT Up 30.2 229.0 Up 10:57:46 - 11:27:46 -2350
Blythe 11:12:39 -15.6 AT Up 28.9 230.8 Low 10:57:39 - 11:27:39 -2352
Calipatria 11:12:41 -16.5 AT Up 29.8 230.2 Low 10:57:41 - 11:27:41 -2390
Yuma 11:12:37 -16.2 AT Up 29.5 231.2 Low 10:57:37 - 11:27:37 -2418

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 500888, (2020/05/18 11:14UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 15.34 120
13Zet Oph      16:37:09.6 -10:34:01  2.6  2.85 122
3Ups Oph       16:27:48.0 -08:22:18  4.2  2.79 124
PPM 231692     16:26:18.6 -11:29:10  8.5  0.39 124
PPM 231701     16:26:55.5 -11:02:42  9.7  0.29 124
500888         16:25:47.1 -11:07:07 15.8       125
Positions are for J2000

Event circumstances last updated at 2018/05/31 17:31:48 UT

Marc W. Buie, Southwest Research Institute

RECON