Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    5.358979E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-08T05:58:01+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 25078
    NORAD ID 25078
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 34990
    NORAD ID 34990
    Object Type DEBRIS
    Country
    CIS CIS

    Conjunction Constraints

    Parameter IRIDIUM 44 COSMOS 2251 DEB
    Time of Closest Approach 2026-09-08T05:53:39+0000
    Collision Probability (Pc) 5.358979E-6
    Conjunction Distance (km) 1.464 km
    Relative Speed (km/s) 9.469 km/s
    Conjunction Risk Parameters R (Radial): 0.62 | I (In-track): 1.031 | C (Cross-track): -0.834
    Collision Risk Index (CRI) 0.5
    X Position (km) 1854.272 1854.823
    Position Y (km) 651.011 652.315
    Position Z (km) -6867.378 -6867.751
    Velocity X (km/s) 6.022 -2.706
    Velocity Y (km/s) 3.922 6.946
    Velocity Z (km/s) 2 -0.076

    Orbital Parameters 国际轨道数据源

    Parameter IRIDIUM 44 COSMOS 2251 DEB
    Semimajor Axis (a) 7134.622 km 7126.908 km
    Eccentricity (e) 0.000276 0.001512
    Inclination (i) 86.3961° 74.0438°
    RAAN 32.3262° 115.0211°
    Perigee Argument 48.5209° 118.1016°
    Mean Anomaly (M) 311.6228° 242.1671°
    Apogee 758.457 km 759.548 km
    Perigee 754.513 km 737.994 km
    Orbit Epoch 2026-09-07T15:14:10+0000 2026-09-06T07:43:28+0000

    IRIDIUM 44 & COSMOS 2251 DEB Collision Probability (Pc) Trend

    IRIDIUM 44 & COSMOS 2251 DEB Collision Probability (Pc) TrendNot Available

    IRIDIUM 44 & COSMOS 2251 DEB Miss Distance (Miss Distance) Trend

    IRIDIUM 44 & COSMOS 2251 DEB Miss Distance (Miss Distance) TrendNot Available

    IRIDIUM 44Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IRIDIUM 44Collision Probability Trend

    Object 1 Probability TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRIDIUM 44

    No nearby objects data