Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.396267E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-19T00:58:00+0800
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    1 Object 1

    AOE ID 18551
    NORAD ID 18551
    Object Type DEBRIS
    Country
    CIS CIS
    ← VS →

    2 Object 2

    AOE ID 62710
    NORAD ID 62710
    Object Type PAYLOAD
    Country
    IN IN

    Conjunction Constraints

    Parameter COSMOS 249 DEB FIREFLY-3
    Time of Closest Approach 2026-10-18T18:48:38+0000
    Collision Probability (Pc) 1.396267E-6
    Conjunction Distance (km) 2.915 km
    Relative Speed (km/s) 14.957 km/s
    Conjunction Risk Parameters R (Radial): -2.763 | I (In-track): -0.209 | C (Cross-track): -0.9
    Collision Risk Index (CRI) 0.38
    X Position (km) 5344.921 5342.784
    Position Y (km) 1272.047 1270.664
    Position Z (km) -4303.942 -4302.524
    Velocity X (km/s) -4.814 4.759
    Velocity Y (km/s) 3.594 -0.189
    Velocity Z (km/s) -4.989 5.862

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 249 DEB FIREFLY-3
    Semimajor Axis (a) 7486.842 km 6967.370 km
    Eccentricity (e) 0.068691 0.000450
    Inclination (i) 62.2976° 97.6962°
    RAAN 170.9115° 6.9757°
    Perigee Argument 219.1435° 111.3528°
    Mean Anomaly (M) 298.3187° 248.8172°
    Apogee 1622.985 km 592.370 km
    Perigee 594.425 km 586.096 km
    Orbit Epoch 2026-10-18T02:21:56+0000 2026-10-18T10:56:21+0000

    COSMOS 249 DEB & FIREFLY-3 Collision Probability (Pc) Trend

    COSMOS 249 DEB & FIREFLY-3 Collision Probability (Pc) TrendNot Available

    COSMOS 249 DEB & FIREFLY-3 Miss Distance (Miss Distance) Trend

    COSMOS 249 DEB & FIREFLY-3 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 249 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    FIREFLY-3Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 249 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    FIREFLY-3Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 249 DEB

    No nearby objects data