Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.267038E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T05:33:31+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 25042
    NORAD ID 25042
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 30979
    NORAD ID 30979
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter IRIDIUM 39 FENGYUN 1C DEB
    Time of Closest Approach 2026-09-16T01:22:45+0000
    Collision Probability (Pc) 2.267038E-6
    Conjunction Distance (km) 2.171 km
    Relative Speed (km/s) 14.03 km/s
    Conjunction Risk Parameters R (Radial): 1.709 | I (In-track): -0.454 | C (Cross-track): 1.26
    Collision Risk Index (CRI) 0.42
    X Position (km) -819.618 -819.913
    Position Y (km) -687.467 -688.96
    Position Z (km) -7022.604 -7024.151
    Velocity X (km/s) 7.159 -6.73
    Velocity Y (km/s) 1.924 3.086
    Velocity Z (km/s) -1.033 0.565

    Orbital Parameters 国际轨道数据源

    Parameter IRIDIUM 39 FENGYUN 1C DEB
    Semimajor Axis (a) 7104.298 km 6997.283 km
    Eccentricity (e) 0.001623 0.018056
    Inclination (i) 86.3951° 97.8026°
    RAAN 15.7411° 154.6029°
    Perigee Argument 218.4081° 61.8502°
    Mean Anomaly (M) 141.5969° 329.5623°
    Apogee 737.691 km 745.487 km
    Perigee 714.631 km 492.805 km
    Orbit Epoch 2026-09-15T14:14:08+0000 2026-09-14T15:54:08+0000

    IRIDIUM 39 & FENGYUN 1C DEB Collision Probability (Pc) Trend

    IRIDIUM 39 & FENGYUN 1C DEB Collision Probability (Pc) TrendNot Available

    IRIDIUM 39 & FENGYUN 1C DEB Miss Distance (Miss Distance) Trend

    IRIDIUM 39 & FENGYUN 1C DEB Miss Distance (Miss Distance) TrendNot Available

    IRIDIUM 39Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IRIDIUM 39Collision Probability Trend

    Object 1 Probability TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRIDIUM 39

    No nearby objects data