Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.027583E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T07:04:40+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 30700
    NORAD ID 30700
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 43929
    NORAD ID 43929
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter FENGYUN 1C DEB IRIDIUM 171
    Time of Closest Approach 2026-09-16T08:53:15+0000
    Collision Probability (Pc) 3.027583E-6
    Conjunction Distance (km) 1.489 km
    Relative Speed (km/s) 4.317 km/s
    Conjunction Risk Parameters R (Radial): -0.892 | I (In-track): 1.138 | C (Cross-track): -0.352
    Collision Risk Index (CRI) 0.45
    X Position (km) -1570.727 -1570.39
    Position Y (km) 2112.126 2111.417
    Position Z (km) 6644.557 6645.822
    Velocity X (km/s) -1.398 -5.106
    Velocity Y (km/s) 6.926 4.73
    Velocity Z (km/s) -2.47 -2.703

    Orbital Parameters 国际轨道数据源

    Parameter FENGYUN 1C DEB IRIDIUM 171
    Semimajor Axis (a) 7189.963 km 7155.806 km
    Eccentricity (e) 0.008718 0.000214
    Inclination (i) 98.5171° 86.3987°
    RAAN 283.0958° 316.1222°
    Perigee Argument 58.9042° 93.3034°
    Mean Anomaly (M) 302.0655° 266.8407°
    Apogee 874.506 km 779.203 km
    Perigee 749.146 km 776.135 km
    Orbit Epoch 2026-09-15T00:20:27+0000 2026-09-15T13:57:07+0000

    FENGYUN 1C DEB & IRIDIUM 171 Collision Probability (Pc) Trend

    FENGYUN 1C DEB & IRIDIUM 171 Collision Probability (Pc) TrendNot Available

    FENGYUN 1C DEB & IRIDIUM 171 Miss Distance (Miss Distance) Trend

    FENGYUN 1C DEB & IRIDIUM 171 Miss Distance (Miss Distance) TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 171Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 171Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FENGYUN 1C DEB

    No nearby objects data