RECON: TNO occultation with 10VL201

Event between 10VL201 and star UC4-534-007675 with event index number of 227054

Geocentric closest approach at 2019/11/23 10:30:02 UTC

J2000 position of star is 04:02:11.1 +16:46:35
Equinox of date position of star is 04:03:12.6 +16:49:31
Stellar brightness R=14.3, use SENSEUP=64
Star is 137 degrees from the moon. Moon is 13% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 35.0 AU from the Sun and 34.0 AU from the Earth.
The TNO is moving 25.1 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 249 seconds.
The 1-sigma cross-track error in the shadow position is 3806 km.
The sky-plane scale is 24638.3 km/arcsec.

The TNO has an absolute magnitude Hv=5.9
Diameter=390.9 km assuming a 5% albedo -- 15.6 sec chord
Diameter=159.6 km assuming a 30% albedo -- 6.4 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 

Star training set for 10VL201, (2019/11/23 10:30UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.9 +16:32:52  0.8  8.08 129
44Zet Per      03:55:23.3 +31:56:28  2.8 15.22 132
PPM 119539     04:01:57.7 +18:14:55  6.5  1.45 136
PPM 119533     04:01:45.2 +17:21:05  6.7  0.64 137
PPM 119543     04:02:09.5 +16:34:32  9.9  0.38 137
PPM 119563     04:03:42.3 +16:55:59 10.2  0.14 136
10VL201        04:03:19.2 +16:49:50 14.3       136
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 25.2 km RECON observability=1.0 and success probability=3.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 10:27:52 -46.6 Dark Down 44.9 238.5 Up 10:12:52 - 10:42:52 9185
Tonasket 10:27:51 -46.7 Dark Down 45.0 238.7 Up 10:12:51 - 10:42:51 9162
Okanogan 10:27:51 -47.0 Dark Down 45.3 238.8 Up 10:12:51 - 10:42:51 9129
Brewster 10:27:51 -47.2 Dark Down 45.5 238.8 Up 10:12:51 - 10:42:51 9102
Manson/Chelan 10:27:52 -47.5 Dark Down 45.8 238.6 Up 10:12:52 - 10:42:52 9081
Entiat 10:27:51 -47.7 Dark Down 46.0 238.7 Up 10:12:51 - 10:42:51 9059
Wenatchee 10:27:52 -47.8 Dark Down 46.2 238.8 Up 10:12:52 - 10:42:52 9034
Ellensburg 10:27:52 -48.2 Dark Down 46.5 238.9 Up 10:12:52 - 10:42:52 8992
Yakima 10:27:51 -48.3 Dark Down 46.8 239.3 Up 10:12:51 - 10:42:51 8952
Toppenish/White Swan 10:27:50 -48.3 Dark Down 46.8 239.7 Up 10:12:50 - 10:42:50 8931
Pasco 10:27:47 -47.6 Dark Down 46.1 241.1 Up 10:12:47 - 10:42:47 8922
PNWRO 10:27:47 -47.5 Dark Down 46.0 241.6 Up 10:12:47 - 10:42:47 8898
George/Umatilla 10:27:47 -47.9 Dark Down 46.4 241.2 Up 10:12:47 - 10:42:47 8888
Goldendale 10:27:51 -48.8 Dark Down 47.3 239.7 Up 10:12:51 - 10:42:51 8875
The Dalles 10:27:52 -49.2 Dark Down 47.6 239.5 Up 10:12:52 - 10:42:52 8852
Maupin 10:27:51 -49.3 Dark Down 47.8 240.0 Up 10:12:51 - 10:42:51 8810
Madras/Culver 10:27:50 -49.5 Dark Down 48.1 240.5 Up 10:12:50 - 10:42:50 8755
Sisters 10:27:51 -49.9 Dark Down 48.5 240.3 Up 10:12:51 - 10:42:51 8720
Redmond 10:27:50 -49.7 Dark Down 48.3 240.8 Up 10:12:50 - 10:42:50 8719
Bend 10:27:50 -49.9 Dark Down 48.5 240.9 Up 10:12:50 - 10:42:50 8697
Oregon Observatory 10:27:50 -50.0 Dark Down 48.6 240.9 Up 10:12:50 - 10:42:50 8679
La Pine/Gilchrist 10:27:50 -50.2 Dark Down 48.8 241.0 Up 10:12:50 - 10:42:50 8658
North Lake 10:27:47 -49.9 Dark Down 48.6 242.1 Up 10:12:47 - 10:42:47 8615
Paisley 10:27:47 -49.9 Dark Down 48.6 243.0 Up 10:12:47 - 10:42:47 8560
Chiloquin 10:27:50 -50.8 Dark Down 49.5 241.8 Up 10:12:50 - 10:42:50 8544
Klamath Falls 10:27:50 -50.9 Dark Down 49.7 242.2 Up 10:12:50 - 10:42:50 8509
Lakeview 10:27:46 -49.9 Dark Down 48.7 243.7 Up 10:12:46 - 10:42:46 8508
Tulelake 10:27:48 -50.8 Dark Down 49.6 242.8 Up 10:12:48 - 10:42:48 8482
Cedarville 10:27:44 -50.0 Dark Down 48.9 244.6 Up 10:12:44 - 10:42:44 8441
Niwot 10:27:06 -39.4 Dark Up 38.7 259.0 Up 10:12:06 - 10:42:06 8390
Fall River/Burney 10:27:47 -51.1 Dark Down 49.9 243.8 Up 10:12:47 - 10:42:47 8389
Susanville 10:27:44 -50.7 Dark Down 49.7 245.3 Up 10:12:44 - 10:42:44 8325
Greenville 10:27:45 -51.0 Dark Down 50.0 245.3 Up 10:12:45 - 10:42:45 8296
Gimple 10:27:45 -51.0 Dark Down 50.0 245.4 Up 10:12:45 - 10:42:45 8296
Quincy 10:27:45 -51.1 Dark Down 50.1 245.5 Up 10:12:45 - 10:42:45 8274
Portola 10:27:43 -50.8 Dark Down 49.8 246.1 Up 10:12:43 - 10:42:43 8263
Reno 10:27:42 -50.4 Dark Down 49.5 247.0 Up 10:12:42 - 10:42:42 8237
Carson City 10:27:41 -50.5 Dark Down 49.6 247.5 Up 10:12:41 - 10:42:41 8199
Yerington 10:27:39 -50.1 Dark Down 49.2 248.3 Up 10:12:39 - 10:42:39 8181
Gardnerville 10:27:41 -50.5 Dark Down 49.7 247.8 Up 10:12:41 - 10:42:41 8174
Hawthorne 10:27:37 -49.8 Dark Down 49.0 249.3 Up 10:12:37 - 10:42:37 8134
Tonopah 10:27:33 -48.9 Dark Down 48.1 251.1 Up 10:12:33 - 10:42:33 8091
Lee Vining 10:27:38 -50.3 Dark Down 49.6 249.4 Up 10:12:38 - 10:42:38 8073
Bishop 10:27:36 -49.9 Dark Down 49.2 250.7 Up 10:12:36 - 10:42:36 8012
Beatty 10:27:30 -48.8 Dark Down 48.2 252.7 Up 10:12:30 - 10:42:30 7971
Indian Springs 10:27:27 -48.0 Dark Down 47.4 253.9 Up 10:12:27 - 10:42:27 7941
Lone Pine 10:27:34 -49.8 Dark Down 49.2 251.9 Up 10:12:34 - 10:42:34 7933
Henderson 10:27:25 -47.5 Dark Down 47.1 255.1 Up 10:12:25 - 10:42:25 7888
Patrick 10:27:21 -46.7 Dark Down 46.3 256.6 Up 10:12:21 - 10:42:21 7828
Searchlight/Boulder City 10:27:24 -47.6 Dark Down 47.2 255.7 Up 10:12:24 - 10:42:24 7828
Kingman/Dolan Springs 10:27:21 -46.9 Dark Down 46.5 256.7 Up 10:12:21 - 10:42:21 7803
DCO 10:27:19 -46.2 Dark Down 45.8 257.4 Up 10:12:19 - 10:42:19 7800
Laughlin/Bullhead City 10:27:22 -47.3 Dark Down 47.0 256.3 Up 10:12:22 - 10:42:22 7798
CPSLO 10:27:40 -52.1 Dark Down 51.6 251.1 Up 10:12:40 - 10:42:40 7787
Mohave Valley 10:27:22 -47.4 Dark Down 47.0 256.6 Up 10:12:22 - 10:42:22 7769
Lake Havasu City 10:27:21 -47.2 Dark Down 46.9 257.2 Up 10:12:21 - 10:42:21 7728
Parker 10:27:21 -47.2 Dark Down 47.0 257.6 Up 10:12:21 - 10:42:21 7690
Wildwood 10:27:33 -50.7 Dark Down 50.4 254.3 Up 10:12:33 - 10:42:33 7664
Idyllwild 10:27:28 -49.3 Dark Down 49.0 256.2 Up 10:12:28 - 10:42:28 7633
Blythe 10:27:21 -47.5 Dark Down 47.3 257.9 Up 10:12:21 - 10:42:21 7632
Calipatria 10:27:23 -48.4 Dark Down 48.2 257.7 Up 10:12:23 - 10:42:23 7574
Yuma 10:27:21 -47.7 Dark Down 47.5 258.9 Up 10:12:21 - 10:42:21 7533

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 10VL201, (2019/11/23 10:30UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  8.08 129
44Zet Per      03:54:07.9 +31:53:01  2.8 15.22 132
PPM 119539     04:00:48.9 +18:11:38  6.5  1.45 136
PPM 119533     04:00:36.9 +17:17:47  6.7  0.64 137
PPM 119543     04:01:01.4 +16:31:15  9.9  0.38 137
PPM 119563     04:02:34.0 +16:52:44 10.2  0.14 136
10VL201        04:02:11.1 +16:46:35 14.3       136
Positions are for J2000

Event circumstances last updated at 2017/12/16 18:30:36 UT

Marc W. Buie, Southwest Research Institute

RECON