Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.150254E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T21:09:11+0800
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    1 Object 1

    AOE ID 25159
    NORAD ID 25159
    Object Type PAYLOAD
    Country
    ORB ORB
    VS

    2 Object 2

    AOE ID 37537
    NORAD ID 37537
    Object Type DEBRIS
    Country
    CIS CIS

    Conjunction Constraints

    Parameter ORBCOMM FM 4 COSMOS 2251 DEB
    Time of Closest Approach 2026-09-04T13:23:15+0000
    Collision Probability (Pc) 2.150254E-6
    Conjunction Distance (km) 2.255 km
    Relative Speed (km/s) 14.753 km/s
    Conjunction Risk Parameters R (Radial): 2.023 | I (In-track): 0.144 | C (Cross-track): 0.985
    Collision Risk Index (CRI) 0.42
    X Position (km) -560.201 -560.916
    Position Y (km) -2186.526 -2187.914
    Position Z (km) 6784.36 6785.985
    Velocity X (km/s) -6.69 5.447
    Velocity Y (km/s) 3.27 -4.952
    Velocity Z (km/s) 0.469 -1.181

    Orbital Parameters 国际轨道数据源

    Parameter ORBCOMM FM 4 COSMOS 2251 DEB
    Semimajor Axis (a) 7150.385 km 7144.007 km
    Eccentricity (e) 0.004115 0.005210
    Inclination (i) 107.9604° 74.0123°
    RAAN 332.0276° 139.1017°
    Perigee Argument 190.5641° 218.2134°
    Mean Anomaly (M) 169.4638° 141.5322°
    Apogee 801.669 km 803.093 km
    Perigee 742.827 km 728.647 km
    Orbit Epoch 2026-09-04T04:37:34+0000 2026-09-02T09:09:22+0000

    ORBCOMM FM 4 & COSMOS 2251 DEB Collision Probability (Pc) Trend

    ORBCOMM FM 4 & COSMOS 2251 DEB Collision Probability (Pc) TrendNot Available

    ORBCOMM FM 4 & COSMOS 2251 DEB Miss Distance (Miss Distance) Trend

    ORBCOMM FM 4 & COSMOS 2251 DEB Miss Distance (Miss Distance) TrendNot Available

    ORBCOMM FM 4Miss 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

    ORBCOMM FM 4Collision Probability Trend

    Object 1 Probability TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ORBCOMM FM 4

    No nearby objects data