Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.950572E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-13T00:39:06+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 40799
    NORAD ID 40799
    Object Type DEBRIS
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 55648
    NORAD ID 55648
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 2251 DEB STARLINK-5501
    Time of Closest Approach 2026-09-12T18:34:28+0000
    Collision Probability (Pc) 2.950572E-6
    Conjunction Distance (km) 1.962 km
    Relative Speed (km/s) 14.381 km/s
    Conjunction Risk Parameters R (Radial): -0.861 | I (In-track): 0.557 | C (Cross-track): 1.673
    Collision Risk Index (CRI) 0.44
    X Position (km) 1621.19 1619.28
    Position Y (km) 6660.043 6659.646
    Position Z (km) 1163.77 1163.562
    Velocity X (km/s) -1.756 -2.834
    Velocity Y (km/s) 1.773 -0.541
    Velocity Z (km/s) -7.149 7.003

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2251 DEB STARLINK-5501
    Semimajor Axis (a) 6947.283 km 6950.170 km
    Eccentricity (e) 0.011057 0.000284
    Inclination (i) 73.9226° 69.9992°
    RAAN 260.1437° 75.3172°
    Perigee Argument 77.3739° 267.2391°
    Mean Anomaly (M) 283.9784° 92.8443°
    Apogee 645.965 km 574.008 km
    Perigee 492.327 km 570.058 km
    Orbit Epoch 2026-09-12T06:37:13+0000 2026-09-11T18:29:43+0000

    COSMOS 2251 DEB & STARLINK-5501 Collision Probability (Pc) Trend

    COSMOS 2251 DEB & STARLINK-5501 Collision Probability (Pc) TrendNot Available

    COSMOS 2251 DEB & STARLINK-5501 Miss Distance (Miss Distance) Trend

    COSMOS 2251 DEB & STARLINK-5501 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5501Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5501Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2251 DEB

    No nearby objects data