RECON: TNO occultation with 99RZ214

Event between 99RZ214 and star UC4-513-003615 with event index number of 349671

Geocentric closest approach at 2020/01/06 07:25:41 UTC

J2000 position of star is 02:17:38.8 +12:35:11
Equinox of date position of star is 02:18:39.8 +12:40:22
Stellar brightness R=16.0, use SENSEUP=128
Star is 14 degrees from the moon. Moon is 78% illuminated.
TNO apparent brightness V=24.6

[RECON map]
TNO is 47.7 AU from the Sun and 47.4 AU from the Earth.
The TNO is moving 6.6 km/sec on the sky relative to the star, or, 0.7 arcsec/hr.
The 1-sigma error in the time of the event is 1833 seconds.
The 1-sigma cross-track error in the shadow position is 4990 km.
The sky-plane scale is 34347.9 km/arcsec.

The TNO has an absolute magnitude Hv=7.7
Diameter=171.4 km assuming a 5% albedo -- 26.0 sec chord
Diameter=70.0 km assuming a 30% albedo -- 10.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 99RZ214, (2020/01/06 07:26UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.3 +16:32:53  0.8 33.65  20
6Bet Ari       01:55:45.0 +20:54:18  2.6  9.89  20
24Xi Ari       02:25:53.6 +10:42:01  5.5  2.64  13
PPM 118088     02:17:32.9 +12:28:14  8.3  0.36  14
PPM 118115     02:19:46.9 +12:27:16 10.6  0.34  14
99RZ214        02:18:43.7 +12:40:42 16.0        14
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 0.5 sigma about the mid-time.
The median site spacing is 24.0 km RECON observability=1.0 and success probability=10.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:12:38 -60.9 Dark Up 28.9 254.3 Low 06:57:38 - 07:27:38 493
Summerland 07:12:39 -60.9 Dark Up 29.2 254.1 Low 06:57:39 - 07:27:39 491
Penticton 07:12:37 -61.2 Dark Up 29.1 254.4 Low 06:57:37 - 07:27:37 456
Okanagan Falls 07:12:37 -61.4 Dark Up 29.2 254.5 Low 06:57:37 - 07:27:37 436
Oliver 07:12:36 -61.5 Dark Up 29.2 254.6 Low 06:57:36 - 07:27:36 419
Anarchist Mountain Observatory 07:12:34 -61.7 Dark Up 29.2 254.8 Low 06:57:34 - 07:27:34 400
Oroville 07:12:35 -61.8 Dark Up 29.2 254.8 Low 06:57:35 - 07:27:35 392
Tonasket 07:12:33 -62.0 Dark Up 29.3 254.9 Low 06:57:33 - 07:27:33 368
Okanogan 07:12:33 -62.2 Dark Up 29.5 255.0 Low 06:57:33 - 07:27:33 333
Brewster 07:12:34 -62.4 Dark Up 29.7 255.0 Low 06:57:34 - 07:27:34 306
Manson/Chelan 07:12:35 -62.5 Dark Up 30.0 254.8 Low 06:57:35 - 07:27:35 286
Entiat 07:12:35 -62.7 Dark Up 30.1 254.8 Up 06:57:35 - 07:27:35 263
Wenatchee 07:12:34 -62.9 Dark Up 30.2 254.9 Up 06:57:34 - 07:27:34 237
Ellensburg 07:12:34 -63.1 Dark Up 30.5 254.9 Up 06:57:34 - 07:27:34 194
Yakima 07:12:33 -63.5 Dark Up 30.6 255.2 Up 06:57:33 - 07:27:33 151
Toppenish/White Swan 07:12:31 -63.7 Dark Up 30.5 255.4 Up 06:57:31 - 07:27:31 127
Pasco 07:12:24 -64.3 Dark Up 29.7 256.5 Low 06:57:24 - 07:27:24 106
PNWRO 07:12:21 -64.5 Dark Up 29.6 256.8 Low 06:57:21 - 07:27:21 78
George/Umatilla 07:12:24 -64.5 Dark Up 29.9 256.5 Low 06:57:24 - 07:27:24 72
Goldendale 07:12:33 -64.1 Dark Up 30.9 255.4 Up 06:57:33 - 07:27:33 71
The Dalles 07:12:35 -64.1 Dark Up 31.2 255.2 Up 06:57:35 - 07:27:35 49
Maupin 07:12:33 -64.5 Dark Up 31.3 255.5 Up 06:57:33 - 07:27:33 4
Madras/Culver 07:12:31 -65.0 Dark Up 31.4 255.8 Up 06:57:31 - 07:27:31 -55
Sisters 07:12:34 -65.1 Dark Up 31.8 255.7 Up 06:57:34 - 07:27:34 -87
Redmond 07:12:31 -65.2 Dark Up 31.6 256.0 Up 06:57:31 - 07:27:31 -93
Bend 07:12:31 -65.4 Dark Up 31.7 256.0 Up 06:57:31 - 07:27:31 -115
Oregon Observatory 07:12:32 -65.5 Dark Up 31.9 256.0 Up 06:57:32 - 07:27:32 -132
La Pine/Gilchrist 07:12:32 -65.6 Dark Up 31.9 256.1 Up 06:57:32 - 07:27:32 -154
North Lake 07:12:27 -66.2 Dark Up 31.6 256.8 Up 06:57:27 - 07:27:27 -205
Paisley 07:12:23 -66.8 Dark Up 31.5 257.4 Up 06:57:23 - 07:27:23 -268
Chiloquin 07:12:32 -66.4 Dark Up 32.5 256.5 Up 06:57:32 - 07:27:32 -271
Klamath Falls 07:12:31 -66.7 Dark Up 32.5 256.8 Up 06:57:31 - 07:27:31 -309
Lakeview 07:12:21 -67.3 Dark Up 31.5 257.9 Up 06:57:21 - 07:27:21 -324
Tulelake 07:12:28 -67.0 Dark Up 32.3 257.2 Up 06:57:28 - 07:27:28 -340
Cedarville 07:12:18 -67.9 Dark Up 31.5 258.4 Up 06:57:18 - 07:27:18 -396
Fall River/Burney 07:12:27 -67.8 Dark Up 32.5 257.8 Up 06:57:27 - 07:27:27 -440
Susanville 07:12:20 -68.6 Dark Up 32.1 258.7 Up 06:57:20 - 07:27:20 -514
Greenville 07:12:22 -68.7 Dark Up 32.3 258.7 Up 06:57:22 - 07:27:22 -542
Gimple 07:12:21 -68.7 Dark Up 32.3 258.7 Up 06:57:21 - 07:27:21 -543
Quincy 07:12:21 -68.8 Dark Up 32.4 258.8 Up 06:57:21 - 07:27:21 -564
Niwot 07:10:51 -72.4 Dark Up 20.6 269.3 Low 06:55:51 - 07:25:51 -577
Portola 07:12:17 -69.2 Dark Up 32.1 259.2 Up 06:57:17 - 07:27:17 -581
Reno 07:12:13 -69.7 Dark Up 31.6 259.8 Up 06:57:13 - 07:27:13 -615
Carson City 07:12:12 -70.0 Dark Up 31.7 260.1 Up 06:57:12 - 07:27:12 -655
Yerington 07:12:08 -70.4 Dark Up 31.2 260.6 Up 06:57:08 - 07:27:08 -680
Gardnerville 07:12:12 -70.2 Dark Up 31.7 260.2 Up 06:57:12 - 07:27:12 -682
Hawthorne 07:12:03 -71.0 Dark Up 30.9 261.2 Up 06:57:03 - 07:27:03 -735
Lee Vining 07:12:06 -71.2 Dark Up 31.4 261.3 Up 06:57:06 - 07:27:06 -793
Tonopah 07:11:53 -72.0 Dark Up 29.9 262.5 Low 06:56:53 - 07:26:53 -794
Bishop 07:12:01 -72.0 Dark Up 30.9 262.1 Up 06:57:01 - 07:27:01 -864
Beatty 07:11:50 -73.2 Dark Up 29.7 263.4 Low 06:56:50 - 07:26:50 -924
Lone Pine 07:11:58 -72.8 Dark Up 30.8 262.8 Up 06:56:58 - 07:26:58 -950
Indian Springs 07:11:42 -73.9 Dark Up 28.9 264.3 Low 06:56:42 - 07:26:42 -965
Henderson 07:11:37 -74.6 Dark Up 28.4 265.0 Low 06:56:37 - 07:26:37 -1027
CPSLO 07:12:15 -72.4 Dark Up 33.0 261.9 Up 06:57:15 - 07:27:15 -1074
Searchlight/Boulder City 07:11:36 -75.2 Dark Up 28.4 265.3 Low 06:56:36 - 07:26:36 -1090
Patrick 07:11:29 -75.6 Dark Up 27.6 266.0 Low 06:56:29 - 07:26:29 -1100
Kingman/Dolan Springs 07:11:30 -75.7 Dark Up 27.8 266.0 Low 06:56:30 - 07:26:30 -1124
Laughlin/Bullhead City 07:11:33 -75.6 Dark Up 28.2 265.7 Low 06:56:33 - 07:26:33 -1124
DCO 07:11:25 -76.2 Dark Up 27.0 266.6 Low 06:56:25 - 07:26:25 -1135
Mohave Valley 07:11:33 -75.8 Dark Up 28.2 265.9 Low 06:56:33 - 07:26:33 -1155
Lake Havasu City 07:11:32 -76.2 Dark Up 28.0 266.2 Low 06:56:32 - 07:26:32 -1200
Wildwood 07:12:00 -74.4 Dark Up 31.5 263.9 Up 06:57:00 - 07:27:00 -1223
Parker 07:11:31 -76.5 Dark Up 28.0 266.4 Low 06:56:31 - 07:26:31 -1239
Idyllwild 07:11:47 -75.7 Dark Up 30.0 265.2 Low 06:56:47 - 07:26:47 -1274
Blythe 07:11:33 -76.8 Dark Up 28.3 266.5 Low 06:56:33 - 07:26:33 -1296
Calipatria 07:11:38 -76.8 Dark Up 29.1 266.3 Low 06:56:38 - 07:26:38 -1347
Yuma 07:11:33 -77.6 Dark Up 28.4 267.0 Low 06:56:33 - 07:26:33 -1398

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 99RZ214, (2020/01/06 07:26UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 33.65  20
6Bet Ari       01:54:38.5 +20:48:27  2.6  9.89  20
24Xi Ari       02:24:49.1 +10:36:38  5.5  2.64  13
PPM 118088     02:16:28.0 +12:22:43  8.3  0.36  14
PPM 118115     02:18:42.0 +12:21:46 10.6  0.34  14
99RZ214        02:17:38.8 +12:35:11 16.0        14
Positions are for J2000

Event circumstances last updated at 2018/10/25 20:45:53 UT

Marc W. Buie, Southwest Research Institute

RECON