Subject: MADCAP -- Mars -- Summary -- 0 Red
From: JPL MDNAV <[email-masked]>
To: <[email-masked]>
Date: Tue, 6 Apr 2021 16:17:42 -0700
List-Id: <mars_madcap_monitor.list.jpl.nasa.gov>

Analysis Time: 2021-04-06 22:21:25 UTC

RED Threshold Updates: 0 
ALL Threshold Updates: 0 
Ephemeris Updates: 0 

Conjunction Assessment Bodies and Types

Body Name Type 
1 Odyssey Active 
1r Odyssey Active/Reference 
2 Mars_Express Active 
3 MRO Active 
4 MAVEN Active 
5 MOM Active 
6 TGO Active 
7 EMM Active 
8 Phobos Natural 
9 Deimos Natural 
10 Viking1 Inactive 
11 Viking2 Inactive 
12 MGS Inactive 

Red (Conjunction Data < 'Red' Thresholds and Event < 14 days from Analysis Time)

Bodies OXD value/limit (km) OXT value/limit (sec) CAD value/limit (km) Collision Probability CA Epoch (UTC-SCET) 
None 

All (Conjunction Data < 'All' Thresholds for <= 100 days)

Bodies OXD (km) OXT (sec) CAD (km) CA Epoch (UTC-SCET) 
4-6 9.2 181.5 1649.4 2021-04-11 20:59:47 
4-6 9.2 181.5 576.6 2021-04-11 21:43:26 
1-6 9.6 4.4 40.3 2021-04-17 18:23:46 
1-6 9.6 4.4 10.5 2021-04-17 19:22:58 
1-6 9.5 38.0 19.0 2021-04-17 20:22:02 
1-6 9.5 38.0 36.8 2021-04-17 21:21:14 
1-4 -3.0 1013.7 551.6 2021-05-09 05:52:48 
1-4 6.2 2240.8 979.4 2021-05-09 09:38:28 

Notes

OXD means "Orbit Crossing Distance". OXT means "Orbit Crossing Timing". CAD means "Close Approach Distance". 

Data for active spacecraft and natural bodies are displayed in the tables above. Data for inactive spacecraft are not displayed, but they are available in the conjunction metric tables and plots, which have been stored in the output directory listed below.  Data for reference trajectories are not considered for Red events, but are considered in the All section for events not covered by the predicts file. Reference trajectories use the same thresholds as the nominal trajectories. 

The note after the probability value listed for RED events refers to the source of covariance data used for the probability calculation, with the following definitions: 

C - Covariance data provided by the mission in OEM format.
P - A covariance converted from the RED threshold polynomial coefficients listed below. 
N - No covariance data, worst case covariance assumed for this body. 
No Data - Probability could not be calculated due to a lack of covariance data from both bodies. 

For more information, please see the point of contact listed below. 

Analysis time: 2021-04-06 22:21:25 UTC 
Active spacecraft: Odyssey, Mars Express, MRO, MAVEN, MOM, TGO, EMM 
Natural bodies: Phobos, Deimos 
Inactive spacecraft: Viking1, Viking2, MGS 
Output directory: /nav/home/jplmdnav/MADCAP/Mars/archive 
Point of contact: [email-masked] 
MADCAP build: 3.1.2 

Red Thresholds -- Polynomial Coefficients

Body Name OXD0 (km) OXD1 (km/t) OXD2 (km/t^2) OXT0 (sec) OXT1 (sec/t) OXT2 (sec/t^2) 
1 Odyssey 0.0050 0.0013 0.0000 0.0705 -0.0411 0.0096 
2 Mars_Express 1.0000 0.0000 0.0000 10.0000 0.0000 0.0000 
3 MRO 0.0877 -0.0315 0.0040 0.0100 0.4939 0.0765 
4 MAVEN 0.5000 0.1000 0.0030 2.1000 0.4000 0.3300 
5 MOM 0.2498 0.0014 0.0012 0.0100 33.0089 0.3246 
6 TGO 1.0000 0.0000 0.0000 10.0000 0.0000 0.0000 
7 EMM 1.0000 0.0000 0.0000 10.0000 0.0000 0.0000 
8 Phobos 30.0000 0.0000 0.0000 15.0000 0.0000 0.0000 
9 Deimos 40.0000 0.0000 0.0000 20.0000 0.0000 0.0000 

Red OX Distance Threshold = OXD0 + (OXD1 * t) + (OXD2 * t^2) [km] 
Red OX Timing Threshold = OXT0 + (OXT1 * t) + (OXT2 * t^2) [sec] 
where t = CA Epoch - Ephemeris File Submit Time (in days) 

Red thresholds are based on 3-sigma values. Thresholds listed as "P" are based on a quadratic fit of the 3-sigma values as a function of time to the event. The polynomial coefficients used are listed in the table above. Lines for coefficients which have  been updated since the last run are colored blue, and each line's body is marked with an "*". Thresholds listed as "C" are based on 3-sigma covariance data provided by the mission. 

All Thresholds -- Constants

Body Name OXD (km) CAD (km) 
1 Odyssey 10 100 
2 Mars_Express 10 100 
3 MRO 10 300 
4 MAVEN 10 3000 
5 MOM 20 100 
6 TGO 10 100 
7 EMM 10 100 
8 Phobos 45 100 
9 Deimos 60 200 

All OX Distance Threshold = OXD 
All CA Distance Threshold = CAD 

All thresholds are always constants. The constants used are listed in the table above. Lines for constants which have been updated since the last run are colored blue, and each line's body is marked with an "*". 

Ephemerides

Body Ephemeris Submitted Begin End 
1 p_m_od85638-85643_87123_v1.bsp 2021-04-05 23:26:25 UTC 04-APR-2021 17:03:50 UTC 04-AUG-2021 23:58:50 UTC 
1r p_m_od85470-85472_86783_v1.bsp_V0.1 Analysis Time 21-MAR-2021 21:30:50 UTC 07-JUL-2021 23:58:50 UTC 
2 MOEM_210329OAS_PREDICT__0001.CR.bsp 2021-03-29 10:18:32 UTC 18-MAR-2021 21:43:09 UTC 27-APR-2021 16:50:31 UTC 
3 pf_psp_rec68817_68812_69588_p-v1.bsp 2021-04-01 16:20:06 UTC 01-APR-2021 04:03:50 UTC 31-MAY-2021 14:43:50 UTC 
4 trj_orb_13694-13696_13949_v1_mvn.bsp 2021-04-05 16:20:26 UTC 04-APR-2021 20:08:50 UTC 13-MAY-2021 06:03:50 UTC 
5 ISRO-MOM-2021-03-24-OD2708-096-v1.xsp.bsp 2021-04-06 10:33:15 UTC 24-MAR-2021 00:00:00 UTC 29-APR-2021 00:10:00 UTC 
6 TOEM_210329OAS_PREDICT__0001.CR.bsp 2021-03-29 13:24:25 UTC 26-FEB-2021 23:58:50 UTC 08-MAY-2021 15:22:52 UTC 
7 62_pred_20210330_20210709_od038_noburn_v1.xsp.bsp 2021-03-31 23:53:21 UTC 30-MAR-2021 15:33:50 UTC 09-JUL-2021 00:00:50 UTC 
8 mar097.2010-2029.bsp Analysis Time 29-DEC-2009 23:58:53 UTC 01-JAN-2030 23:58:50 UTC 
9 mar097.2010-2029.bsp Analysis Time 29-DEC-2009 23:58:53 UTC 01-JAN-2030 23:58:50 UTC 
10 Viking1_210101_220101.boa Analysis Time 01-JAN-2021 11:58:50 UTC 01-JAN-2022 11:58:50 UTC 
11 viking2_210101_220101.boa Analysis Time 01-JAN-2021 11:58:50 UTC 01-JAN-2022 11:58:50 UTC 
12 p_201029-211029-061215_10yr_nominal.nio Analysis Time 29-OCT-2020 05:28:50 UTC 29-OCT-2021 06:28:50 UTC 

Ephemeris files for the bodies analyzed are listed in the table above. Lines for files which have been updated since the last run are colored blue, and each line's body is marked with an "*".