Space Conjunction Data Service

    A global standardized CDM data service platform for space conjunction detection, risk analytics

    Conjunction data in this service is generated through a preliminary screening process based on SGP4 (Simplified General Perturbations Model 4) orbit propagation. Space object ephemerides are propagated using publicly available orbital elements to identify potential close-approach events and produce candidate Conjunction Data Messages (CDMs).
    This dataset is provided as a rapid screening product for preliminary conjunction assessment, supporting early detection and prioritization of potential close-approach events. It serves as upstream input for high-precision orbit determination (OD), covariance analysis, and refined collision probability (Pc) evaluation.
    Data Production Rules
    Minimum Miss Distance ≤ 3 km, latest approach time ≤ 72 hours
    Today Events
    0
    Period: 10-08 00:00 ~ 10-08 23:59
    Month Events
    0
    Period: 10-01 ~ 10-31
    Next 3 Days Events
    0
    Period: 10-08 00:00 ~ Day 3 23:59
    High Risk Events
    0
    Today 652
    Tomorrow 1825
    Day after 951
    Extreme(>10⁻³) + High(10⁻³~10⁻⁴)
    Monitored Objects
    0
    Total monitored space objects

    Collision Level Distribution (Next 3 Days)

    Data Update Time:2026-10-08T13:00:00Z
    Extreme Risk 142 0.2%
    High Risk 999+ 5.6%
    Medium Risk 999+ 15.0%
    Low Risk 999+ 66.5%
    Very Low Risk 999+ 12.7%
    Collision Probability Levels (1-5)

    Upcoming Collision Events (Next 3 Days)

    Data Update Time:2026-10-08T13:00:00Z
    2026-10-08T22:33:02+0000 极高风险: 1.728479E-3
    2026-10-08T15:17:34+0000 极高风险: 1.636426E-3
    2026-10-09T06:18:54+0000 极高风险: 1.608199E-3
    View All Events

    Miss Distance Level Distribution (Next 3 Days)

    Data Update Time:2026-10-08T13:00:00Z
    Extremely Close Range 2 0.0%
    Close Range 124 0.2%
    Medium Range 959 1.6%
    Long Range 999+ 14.6%
    Extremely Long Range 999+ 83.5%
    Miss Distance Levels (1-5)

    Upcoming Miss Distance Events (Next 3 Days)

    Data Update Time:2026-10-08T13:00:00Z
    2026-10-08T22:33:02+0000 极近距离: 0.007km
    2026-10-08T15:17:34+0000 极近距离: 0.017km
    2026-10-09T20:12:51+0000 近距离: 0.026km
    View All Events

    Conjunction Heatmap - Today

    Data Update Time:2026-10-08T13:00:00Z
    Event count distribution by altitude layer × date
    Conjunction Heatmap - Today

    Recent Conjunction Events

    Event ID Objects TCA
    Miss Distance
    Dist Level
    Collision Risk Probability (CRP)
    Risk Level
    Collision Risk Index (CRI) Rel. Velocity Action
    CDM_261008-000005-370805-838321
    2026-10-08T
    00:00:15+0000
    2.929 km
    极远距离
    1.102694E-6 低风险
    0.36 9.999km/s
    CDM_261008-000003-075003-586522
    METEOR-M (35865)
    2026-10-08T
    00:00:37+0000
    2.028 km
    极远距离
    2.549654E-6 低风险
    0.43 13.029km/s
    CDM_261008-000003-075003-586523
    METEOR-M (35865)
    2026-10-08T
    00:00:37+0000
    2.015 km
    极远距离
    2.588837E-6 低风险
    0.43 13.029km/s
    CDM_261008-000003-049206-372921
    2026-10-08T
    00:00:41+0000
    2.903 km
    极远距离
    1.385252E-6 低风险
    0.38 14.623km/s
    CDM_261008-000004-917108-218021
    2026-10-08T
    00:00:46+0000
    1.245 km
    极远距离
    7.348058E-6 低风险
    0.52 6.787km/s
    CDM_261008-000005-815306-881023
    2026-10-08T
    00:00:50+0000
    2.842 km
    极远距离
    1.431451E-6 低风险
    0.38 14.741km/s
    CDM_261008-000101-445001-454725
    SL-8 R/B (14547)
    2026-10-08T
    00:01:05+0000
    2.617 km
    极远距离
    1.416176E-6 低风险
    0.38 11.726km/s
    CDM_261008-000103-155303-513921
    2026-10-08T
    00:01:07+0000
    2.727 km
    极远距离
    1.088557E-6 低风险
    0.36 8.274km/s
    CDM_261008-000102-282605-753824
    ITAMSAT (22826)
    2026-10-08T
    00:01:30+0000
    2.266 km
    极远距离
    2.139995E-6 低风险
    0.42 14.891km/s
    CDM_261008-000106-121706-552721
    2026-10-08T
    00:01:31+0000
    2.99 km
    极远距离
    1.045974E-6 低风险
    0.35 9.503km/s
    View All Events

    Space Object Flight Safety Monitoring Process

    ② Space Conjunction Data Service Conjunction params, risk calculation & assessment (Space Conjunction Data Service)
    ↑
    ① AOE Orbital Elements ADS Orbital Elements
    Daily Monitoring
    ③ High-Risk Check (High-Risk Check)
    →
    ④ TianShu Collision Warning Service Observation tracking, orbit det., collision calc. (TianShu Collision Warning Service)
    Loop
    ⑥ TianShu Safety Check Orbit extrapolation, risk assessment, continuous monitoring (TianShu Safety Check)
    ←
    ⑤ Collision Warning Report Plan iteration, safety check, avoidance advice (Collision Warning Report)
    ↓
    High-Risk Monitoring

    Event Alert Subscription

    Receive instant alerts for conjunctions of your tracked objects

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    High-precision CDM push, customized filters, dedicated support

    High-precision Orbit Determination (OD) reports
    Real-time CDM push to email or API endpoints
    Custom probability thresholds and alert rules
    7×24 dedicated technical support team
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