RECON: TNO occultation with 14XP40

Event between 14XP40 and star UC4-416-053831 with event index number of 253168

Geocentric closest approach at 2019/04/19 04:54:19 UTC

J2000 position of star is 11:04:56.0 -06:57:18
Equinox of date position of star is 11:05:51.4 -07:03:14
Stellar brightness R=16.0, use SENSEUP=128
Star is 39 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 28.7 AU from the Sun and 27.9 AU from the Earth.
The TNO is moving 16.7 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 226 seconds.
The 1-sigma cross-track error in the shadow position is 3495 km.
The sky-plane scale is 20260.8 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=232.3 km assuming a 5% albedo -- 13.9 sec chord
Diameter=94.8 km assuming a 30% albedo -- 5.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 14XP40, (2019/04/19 04:54UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:23.9 +11:52:20  1.3 23.58  56
4Gam Crv       12:16:48.1 -17:38:56  2.6 20.27  24
PPM 194312     11:17:56.9 -07:14:25  6.1  2.99  36
PPM 194114     11:07:04.4 -07:06:46  7.9  0.29  39
PPM 194093     11:05:51.7 -07:19:02  9.6  0.26  39
14XP40         11:05:54.6 -07:03:34 16.0        39
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 4.0 sigma about the mid-time.
The median site spacing is 15.0 km RECON observability=1.0 and success probability=7.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 04:56:24 -31.4 Dark Up 42.1 193.0 Up 04:41:24 - 05:11:24 2755
Oroville 04:57:40 -18.2 Dark Up 34.0 174.9 Up 04:42:40 - 05:12:40 2584
Tonasket 04:57:40 -18.4 Dark Up 34.2 174.9 Up 04:42:40 - 05:12:40 2572
Okanogan 04:57:40 -18.5 Dark Up 34.5 174.7 Up 04:42:40 - 05:12:40 2547
Brewster 04:57:39 -18.6 Dark Up 34.8 174.4 Up 04:42:39 - 05:12:39 2523
Manson/Chelan 04:57:40 -18.6 Dark Up 35.0 174.0 Up 04:42:40 - 05:12:40 2495
Entiat 04:57:40 -18.7 Dark Up 35.2 173.9 Up 04:42:40 - 05:12:40 2479
Wenatchee 04:57:39 -18.8 Dark Up 35.4 173.7 Up 04:42:39 - 05:12:39 2460
Pasco 04:57:33 -20.2 Dark Up 36.7 175.1 Up 04:42:33 - 05:12:33 2448
PNWRO 04:57:33 -20.5 Dark Up 36.9 175.4 Up 04:42:33 - 05:12:33 2444
Ellensburg 04:57:39 -19.0 Dark Up 35.8 173.4 Up 04:42:39 - 05:12:39 2427
George/Umatilla 04:57:33 -20.3 Dark Up 37.0 174.8 Up 04:42:33 - 05:12:33 2419
Yakima 04:57:39 -19.2 Dark Up 36.2 173.4 Up 04:42:39 - 05:12:39 2403
Toppenish/White Swan 04:57:37 -19.5 Dark Up 36.5 173.6 Up 04:42:37 - 05:12:37 2398
Goldendale 04:57:38 -19.6 Dark Up 37.0 173.0 Up 04:42:38 - 05:12:38 2346
The Dalles 04:57:40 -19.6 Dark Up 37.2 172.5 Up 04:42:40 - 05:12:40 2315
Maupin 04:57:38 -19.9 Dark Up 37.6 172.6 Up 04:42:38 - 05:12:38 2295
Madras/Culver 04:57:38 -20.2 Dark Up 38.1 172.5 Up 04:42:38 - 05:12:38 2260
Redmond 04:57:37 -20.4 Dark Up 38.5 172.4 Up 04:42:37 - 05:12:37 2236
Sisters 04:57:38 -20.2 Dark Up 38.4 171.9 Up 04:42:38 - 05:12:38 2218
Bend 04:57:37 -20.5 Dark Up 38.7 172.2 Up 04:42:37 - 05:12:37 2216
Oregon Observatory 04:57:37 -20.5 Dark Up 38.8 172.0 Up 04:42:37 - 05:12:37 2199
North Lake 04:57:34 -21.2 Dark Up 39.5 172.6 Up 04:42:34 - 05:12:34 2185
La Pine/Gilchrist 04:57:37 -20.6 Dark Up 39.0 171.9 Up 04:42:37 - 05:12:37 2183
Paisley 04:57:31 -21.8 Dark Up 40.1 173.0 Up 04:42:31 - 05:12:31 2168
Lakeview 04:57:29 -22.2 Dark Up 40.6 173.2 Up 04:42:29 - 05:12:29 2145
Cedarville 04:57:26 -22.7 Dark Up 41.3 173.3 Up 04:42:26 - 05:12:26 2112
Chiloquin 04:57:35 -21.1 Dark Up 40.1 171.3 Up 04:42:35 - 05:12:35 2096
Klamath Falls 04:57:35 -21.4 Dark Up 40.5 171.4 Up 04:42:35 - 05:12:35 2078
Tulelake 04:57:33 -21.7 Dark Up 40.8 171.7 Up 04:42:33 - 05:12:33 2075
DCO 04:56:41 -31.0 Dark Up 47.9 182.7 Up 04:41:41 - 05:11:41 2052
Tonopah 04:57:07 -26.7 Dark Up 44.9 177.0 Up 04:42:07 - 05:12:07 2036
Patrick 04:56:45 -30.4 Dark Up 47.6 181.6 Up 04:41:45 - 05:11:45 2035
Fall River/Burney 04:57:31 -22.4 Dark Up 41.7 171.7 Up 04:42:31 - 05:12:31 2020
Henderson 04:56:52 -29.3 Dark Up 47.0 180.0 Up 04:41:52 - 05:11:52 2018
Indian Springs 04:56:56 -28.6 Dark Up 46.5 179.0 Up 04:41:56 - 05:11:56 2017
Susanville 04:57:26 -23.2 Dark Up 42.4 172.6 Up 04:42:26 - 05:12:26 2016
Kingman/Dolan Springs 04:56:45 -30.4 Dark Up 47.8 181.4 Up 04:41:45 - 05:11:45 2011
Reno 04:57:22 -24.2 Dark Up 43.3 173.6 Up 04:42:22 - 05:12:22 2001
Yerington 04:57:17 -25.0 Dark Up 43.9 174.4 Up 04:42:17 - 05:12:17 1998
Hawthorne 04:57:13 -25.6 Dark Up 44.4 175.1 Up 04:42:13 - 05:12:13 1994
Gimple 04:57:26 -23.2 Dark Up 42.6 172.3 Up 04:42:26 - 05:12:26 1987
Portola 04:57:24 -23.7 Dark Up 43.0 172.7 Up 04:42:24 - 05:12:24 1986
Searchlight/Boulder City 04:56:49 -29.7 Dark Up 47.6 180.1 Up 04:41:49 - 05:11:49 1983
Greenville 04:57:26 -23.2 Dark Up 42.6 172.2 Up 04:42:26 - 05:12:26 1983
Beatty 04:57:02 -27.7 Dark Up 46.1 177.5 Up 04:42:02 - 05:12:02 1983
Laughlin/Bullhead City 04:56:48 -30.2 Dark Up 47.9 180.6 Up 04:41:48 - 05:11:48 1982
Carson City 04:57:19 -24.5 Dark Up 43.7 173.6 Up 04:42:19 - 05:12:19 1978
Quincy 04:57:26 -23.3 Dark Up 42.8 172.1 Up 04:42:26 - 05:12:26 1970
Gardnerville 04:57:19 -24.6 Dark Up 43.9 173.6 Up 04:42:19 - 05:12:19 1965
Mohave Valley 04:56:47 -30.3 Dark Up 48.1 180.6 Up 04:41:47 - 05:11:47 1964
Lake Havasu City 04:56:44 -30.8 Dark Up 48.5 181.0 Up 04:41:44 - 05:11:44 1950
Lee Vining 04:57:15 -25.6 Dark Up 44.9 174.3 Up 04:42:15 - 05:12:15 1931
Bishop 04:57:10 -26.4 Dark Up 45.6 175.3 Up 04:42:10 - 05:12:10 1929
Parker 04:56:44 -31.0 Dark Up 48.9 181.0 Up 04:41:44 - 05:11:44 1928
Lone Pine 04:57:07 -27.1 Dark Up 46.4 175.7 Up 04:42:07 - 05:12:07 1895
Blythe 04:56:44 -31.2 Dark Up 49.4 180.6 Up 04:41:44 - 05:11:44 1876
Yuma 04:56:42 -31.8 Dark Up 50.4 180.5 Up 04:41:42 - 05:11:42 1810
Calipatria 04:56:46 -30.9 Dark Up 49.9 179.1 Up 04:41:46 - 05:11:46 1792
Idyllwild 04:56:53 -29.8 Dark Up 49.3 177.4 Up 04:41:53 - 05:11:53 1770
Wildwood 04:57:02 -28.4 Dark Up 48.8 174.6 Up 04:42:02 - 05:12:02 1693
CPSLO 04:57:15 -26.3 Dark Up 47.4 171.8 Up 04:42:15 - 05:12:15 1668

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 14XP40, (2019/04/19 04:54UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 23.58  56
4Gam Crv       12:15:48.2 -17:32:31  2.6 20.27  24
PPM 194312     11:16:58.2 -07:08:05  6.1  2.99  36
PPM 194114     11:06:05.8 -07:00:30  7.9  0.29  39
PPM 194093     11:04:53.1 -07:12:46  9.6  0.26  39
14XP40         11:04:56.0 -06:57:18 16.0        39
Positions are for J2000

Event circumstances last updated at 2018/04/01 16:47:19 UT

Marc W. Buie, Southwest Research Institute

RECON