Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.486009E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-21T20:56:45+0800
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    1 Object 1

    AOE ID 31891
    NORAD ID 31891
    Object Type DEBRIS
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 56163
    NORAD ID 56163
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter FENGYUN 1C DEB CHECKMATE 5
    Time of Closest Approach 2026-09-22T12:37:15+0000
    Collision Probability (Pc) 1.486009E-6
    Conjunction Distance (km) 2.234 km
    Relative Speed (km/s) 7.76 km/s
    Conjunction Risk Parameters R (Radial): 1.507 | I (In-track): -1.389 | C (Cross-track): -0.889
    Collision Risk Index (CRI) 0.38
    X Position (km) -1389.585 -1388.887
    Position Y (km) 1745.109 1744.244
    Position Z (km) 6963.263 6965.201
    Velocity X (km/s) -0.583 -6.724
    Velocity Y (km/s) 7.104 2.363
    Velocity Z (km/s) -2.051 -1.925

    Orbital Parameters 国际轨道数据源

    Parameter FENGYUN 1C DEB CHECKMATE 5
    Semimajor Axis (a) 7390.453 km 7324.355 km
    Eccentricity (e) 0.022418 0.000734
    Inclination (i) 99.3930° 81.0042°
    RAAN 275.9063° 339.4555°
    Perigee Argument 174.7100° 66.7788°
    Mean Anomaly (M) 185.6490° 293.4141°
    Apogee 1177.996 km 951.595 km
    Perigee 846.636 km 940.841 km
    Orbit Epoch 2026-09-20T23:11:43+0000 2026-09-21T04:54:24+0000

    FENGYUN 1C DEB & CHECKMATE 5 Collision Probability (Pc) Trend

    FENGYUN 1C DEB & CHECKMATE 5 Collision Probability (Pc) TrendNot Available

    FENGYUN 1C DEB & CHECKMATE 5 Miss Distance (Miss Distance) Trend

    FENGYUN 1C DEB & CHECKMATE 5 Miss Distance (Miss Distance) TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    CHECKMATE 5Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    CHECKMATE 5Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FENGYUN 1C DEB

    No nearby objects data