Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.976233E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-10T20:32:03+0800
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    1 Object 1

    AOE ID 30744
    NORAD ID 30744
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 51789
    NORAD ID 51789
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter FENGYUN 1C DEB STARLINK-3639
    Time of Closest Approach 2026-09-11T05:12:57+0000
    Collision Probability (Pc) 1.976233E-6
    Conjunction Distance (km) 2.315 km
    Relative Speed (km/s) 14.07 km/s
    Conjunction Risk Parameters R (Radial): -0.87 | I (In-track): 0.823 | C (Cross-track): 1.981
    Collision Risk Index (CRI) 0.41
    X Position (km) -138.395 -136.636
    Position Y (km) 4854.438 4854.235
    Position Z (km) -4824.291 -4825.781
    Velocity X (km/s) 1.481 -6.364
    Velocity Y (km/s) 5.293 -3.049
    Velocity Z (km/s) 5.285 -2.889

    Orbital Parameters 国际轨道数据源

    Parameter FENGYUN 1C DEB STARLINK-3639
    Semimajor Axis (a) 6839.816 km 6840.855 km
    Eccentricity (e) 0.000202 0.000123
    Inclination (i) 98.7273° 53.1581°
    RAAN 80.6559° 228.2200°
    Perigee Argument 185.6598° 82.8371°
    Mean Anomaly (M) 296.4816° 277.2771°
    Apogee 463.060 km 463.559 km
    Perigee 460.298 km 461.877 km
    Orbit Epoch 2026-09-09T08:34:38+0000 2026-09-10T04:43:05+0000

    FENGYUN 1C DEB & STARLINK-3639 Collision Probability (Pc) Trend

    FENGYUN 1C DEB & STARLINK-3639 Collision Probability (Pc) TrendNot Available

    FENGYUN 1C DEB & STARLINK-3639 Miss Distance (Miss Distance) Trend

    FENGYUN 1C DEB & STARLINK-3639 Miss Distance (Miss Distance) TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-3639Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-3639Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FENGYUN 1C DEB

    No nearby objects data