RECON: TNO occultation with 03QB112

Event between 03QB112 and star GA1000:00121746 with event index number of 1000035

Geocentric closest approach at 2020/11/19 08:46:37 UTC

J2000 position of star is 01:20:49.3 +10:39:30
Equinox of date position of star is 01:21:49.2 +10:45:25
Stellar brightness G=14.1, use SENSEUP=64
Star is 89 degrees from the moon. Moon is 22% illuminated.
TNO apparent brightness V=23.7

[RECON map]
TNO is 40.8 AU from the Sun and 40.0 AU from the Earth.
The TNO is moving 19.9 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 388 seconds.
The 1-sigma cross-track error in the shadow position is 5319 km.
The sky-plane scale is 29007.8 km/arcsec.

The TNO has an absolute magnitude Hv=7.5
Diameter=187.9 km assuming a 5% albedo -- 9.4 sec chord
Diameter=76.7 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 03QB112, (2020/11/19 08:47UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:07.3 +16:32:59  0.8 47.66 136
6Bet Ari       01:55:47.9 +20:54:34  2.6 13.00 101
PPM 144653     01:30:08.7 +07:24:05  6.4  3.93  90
PPM 117281     01:23:49.4 +10:28:40  8.0  0.55  90
PPM 117223     01:20:45.7 +11:04:00  9.0  0.41  89
PPM 117242     01:21:53.5 +10:41:10 11.2  0.08  89
03QB112        01:21:55.4 +10:46:02 14.1        90
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 2.3 sigma about the mid-time.
The median site spacing is 23.2 km RECON observability=1.0 and success probability=7.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:42:52 -57.4 Dark Down 33.3 244.2 Up 08:27:52 - 08:57:52 -4080
Summerland 08:42:53 -57.6 Dark Down 33.5 243.8 Up 08:27:53 - 08:57:53 -4082
Penticton 08:42:52 -57.8 Dark Down 33.5 244.2 Up 08:27:52 - 08:57:52 -4115
Okanagan Falls 08:42:52 -58.0 Dark Down 33.6 244.3 Up 08:27:52 - 08:57:52 -4133
Oliver 08:42:52 -58.1 Dark Down 33.7 244.4 Up 08:27:52 - 08:57:52 -4150
Anarchist Mountain Observatory 08:42:51 -58.2 Dark Down 33.6 244.7 Up 08:27:51 - 08:57:51 -4168
Oroville 08:42:51 -58.3 Dark Down 33.7 244.7 Up 08:27:51 - 08:57:51 -4175
Tonasket 08:42:51 -58.5 Dark Down 33.8 244.8 Up 08:27:51 - 08:57:51 -4198
Okanogan 08:42:50 -58.9 Dark Down 34.1 244.9 Up 08:27:50 - 08:57:50 -4231
Brewster 08:42:51 -59.2 Dark Down 34.3 244.9 Up 08:27:51 - 08:57:51 -4256
Manson/Chelan 08:42:51 -59.5 Dark Down 34.6 244.7 Up 08:27:51 - 08:57:51 -4274
Entiat 08:42:51 -59.7 Dark Down 34.7 244.7 Up 08:27:51 - 08:57:51 -4296
Wenatchee 08:42:51 -59.9 Dark Down 34.9 244.8 Up 08:27:51 - 08:57:51 -4320
Ellensburg 08:42:51 -60.4 Dark Down 35.2 244.8 Up 08:27:51 - 08:57:51 -4360
Yakima 08:42:51 -60.7 Dark Down 35.4 245.1 Up 08:27:51 - 08:57:51 -4401
Toppenish/White Swan 08:42:50 -60.9 Dark Down 35.4 245.4 Up 08:27:50 - 08:57:50 -4424
Pasco 08:42:46 -60.6 Dark Down 34.6 246.6 Up 08:27:46 - 08:57:46 -4446
PNWRO 08:42:46 -60.7 Dark Down 34.6 247.0 Up 08:27:46 - 08:57:46 -4473
Goldendale 08:42:50 -61.5 Dark Down 35.9 245.4 Up 08:27:50 - 08:57:50 -4477
George/Umatilla 08:42:47 -60.9 Dark Down 34.9 246.6 Up 08:27:47 - 08:57:47 -4479
The Dalles 08:42:51 -61.8 Dark Down 36.2 245.2 Up 08:27:51 - 08:57:51 -4497
Maupin 08:42:50 -62.2 Dark Down 36.3 245.5 Up 08:27:50 - 08:57:50 -4540
Madras/Culver 08:42:50 -62.7 Dark Down 36.6 245.9 Up 08:27:50 - 08:57:50 -4596
Sisters 08:42:50 -63.1 Dark Down 37.0 245.7 Up 08:27:50 - 08:57:50 -4626
Redmond 08:42:50 -63.0 Dark Down 36.8 246.1 Up 08:27:50 - 08:57:50 -4632
Bend 08:42:49 -63.2 Dark Down 36.9 246.1 Up 08:27:49 - 08:57:49 -4653
Oregon Observatory 08:42:50 -63.4 Dark Down 37.1 246.1 Up 08:27:50 - 08:57:50 -4669
La Pine/Gilchrist 08:42:50 -63.6 Dark Down 37.2 246.2 Up 08:27:50 - 08:57:50 -4690
North Lake 08:42:48 -63.8 Dark Down 37.0 247.0 Up 08:27:48 - 08:57:48 -4740
Paisley 08:42:46 -64.1 Dark Down 37.0 247.7 Up 08:27:46 - 08:57:46 -4800
Chiloquin 08:42:49 -64.7 Dark Down 37.9 246.6 Up 08:27:49 - 08:57:49 -4802
Klamath Falls 08:42:49 -65.0 Dark Down 38.0 246.9 Up 08:27:49 - 08:57:49 -4838
Lakeview 08:42:45 -64.5 Dark Down 37.0 248.2 Up 08:27:45 - 08:57:45 -4855
Tulelake 08:42:47 -65.1 Dark Down 37.9 247.4 Up 08:27:47 - 08:57:47 -4869
Cedarville 08:42:44 -65.0 Dark Down 37.1 248.8 Up 08:27:44 - 08:57:44 -4925
Fall River/Burney 08:42:47 -65.9 Dark Down 38.2 248.1 Up 08:27:47 - 08:57:47 -4964
Susanville 08:42:45 -66.1 Dark Down 37.9 249.2 Up 08:27:45 - 08:57:45 -5037
Greenville 08:42:44 -66.5 Dark Down 38.2 249.2 Up 08:27:44 - 08:57:44 -5064
Gimple 08:42:44 -66.4 Dark Down 38.1 249.2 Up 08:27:44 - 08:57:44 -5065
Quincy 08:42:45 -66.6 Dark Down 38.3 249.3 Up 08:27:45 - 08:57:45 -5085
Portola 08:42:43 -66.5 Dark Down 38.0 249.8 Up 08:27:43 - 08:57:43 -5103
Reno 08:42:41 -66.5 Dark Down 37.6 250.6 Up 08:27:41 - 08:57:41 -5136
Niwot 08:42:07 -57.8 Dark Down 26.7 261.2 Low 08:27:07 - 08:57:07 -5141
Carson City 08:42:40 -66.8 Dark Down 37.7 250.8 Up 08:27:40 - 08:57:40 -5175
Yerington 08:42:38 -66.6 Dark Down 37.3 251.5 Up 08:27:38 - 08:57:38 -5201
Gardnerville 08:42:40 -66.9 Dark Down 37.7 251.0 Up 08:27:40 - 08:57:40 -5201
Hawthorne 08:42:37 -66.7 Dark Down 37.1 252.2 Up 08:27:37 - 08:57:37 -5254
Lee Vining 08:42:37 -67.4 Dark Down 37.6 252.3 Up 08:27:37 - 08:57:37 -5311
Tonopah 08:42:32 -66.3 Dark Down 36.1 253.7 Up 08:27:32 - 08:57:32 -5315
Bishop 08:42:35 -67.5 Dark Down 37.2 253.3 Up 08:27:35 - 08:57:35 -5380
Beatty 08:42:30 -66.9 Dark Down 36.1 254.8 Up 08:27:30 - 08:57:30 -5442
Lone Pine 08:42:34 -67.8 Dark Down 37.2 254.1 Up 08:27:34 - 08:57:34 -5465
Indian Springs 08:42:27 -66.5 Dark Down 35.4 255.9 Up 08:27:27 - 08:57:27 -5485
Henderson 08:42:25 -66.4 Dark Down 35.0 256.7 Up 08:27:25 - 08:57:25 -5547
CPSLO 08:42:40 -70.2 Dark Down 39.6 253.1 Up 08:27:40 - 08:57:40 -5581
Searchlight/Boulder City 08:42:24 -66.7 Dark Down 35.0 257.2 Up 08:27:24 - 08:57:24 -5609
Patrick 08:42:21 -66.1 Dark Down 34.2 257.9 Up 08:27:21 - 08:57:21 -5621
Laughlin/Bullhead City 08:42:23 -66.7 Dark Down 34.8 257.6 Up 08:27:23 - 08:57:23 -5643
Kingman/Dolan Springs 08:42:22 -66.3 Dark Down 34.4 257.9 Up 08:27:22 - 08:57:22 -5644
DCO 08:42:19 -65.8 Dark Down 33.7 258.6 Up 08:27:19 - 08:57:19 -5658
Mohave Valley 08:42:22 -66.8 Dark Down 34.9 257.8 Up 08:27:22 - 08:57:22 -5673
Lake Havasu City 08:42:22 -66.9 Dark Down 34.8 258.2 Up 08:27:22 - 08:57:22 -5718
Wildwood 08:42:34 -69.9 Dark Down 38.3 255.5 Up 08:27:34 - 08:57:34 -5731
Parker 08:42:22 -67.1 Dark Down 34.8 258.5 Up 08:27:22 - 08:57:22 -5756
Idyllwild 08:42:28 -68.9 Dark Down 36.9 257.1 Up 08:27:28 - 08:57:28 -5785
Blythe 08:42:23 -67.6 Dark Down 35.2 258.7 Up 08:27:23 - 08:57:23 -5812
Calipatria 08:42:25 -68.5 Dark Down 36.0 258.4 Up 08:27:25 - 08:57:25 -5859
Yuma 08:42:22 -68.1 Dark Down 35.4 259.3 Up 08:27:22 - 08:57:22 -5912

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 03QB112, (2020/11/19 08:47UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 47.66 136
6Bet Ari       01:54:38.5 +20:48:27  2.6 13.00 101
PPM 144653     01:29:03.1 +07:17:38  6.4  3.93  90
PPM 117281     01:22:43.3 +10:22:09  8.0  0.55  90
PPM 117223     01:19:39.6 +10:57:27  9.0  0.41  89
PPM 117242     01:20:47.4 +10:34:38 11.2  0.08  89
03QB112        01:20:49.3 +10:39:30 14.1        89
Positions are for J2000

Event circumstances last updated at 2018/12/03 22:17:45 UT

Marc W. Buie, Southwest Research Institute

RECON