Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.096882E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T08:32:03+0800
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    1 Object 1

    AOE ID 3557
    NORAD ID 3557
    Object Type DEBRIS
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 55399
    NORAD ID 55399
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 252 DEB STARLINK-5276
    Time of Closest Approach 2026-09-06T07:17:05+0000
    Collision Probability (Pc) 3.096882E-6
    Conjunction Distance (km) 1.738 km
    Relative Speed (km/s) 9.199 km/s
    Conjunction Risk Parameters R (Radial): -1.535 | I (In-track): -0.65 | C (Cross-track): 0.488
    Collision Risk Index (CRI) 0.45
    X Position (km) 1302.332 1303.412
    Position Y (km) -3320.33 -3320.899
    Position Z (km) -5968.543 -5969.779
    Velocity X (km/s) 5.561 6.464
    Velocity Y (km/s) 5.321 -2.66
    Velocity Z (km/s) -1.592 2.891

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 252 DEB STARLINK-5276
    Semimajor Axis (a) 7546.032 km 6950.191 km
    Eccentricity (e) 0.081157 0.000352
    Inclination (i) 62.3174° 69.9999°
    RAAN 54.0363° 333.1563°
    Perigee Argument 268.4836° 269.3880°
    Mean Anomaly (M) 82.3163° 90.6876°
    Apogee 1780.308 km 574.499 km
    Perigee 555.482 km 569.609 km
    Orbit Epoch 2026-09-04T17:42:01+0000 2026-09-04T15:31:22+0000

    COSMOS 252 DEB & STARLINK-5276 Collision Probability (Pc) Trend

    COSMOS 252 DEB & STARLINK-5276 Collision Probability (Pc) TrendNot Available

    COSMOS 252 DEB & STARLINK-5276 Miss Distance (Miss Distance) Trend

    COSMOS 252 DEB & STARLINK-5276 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 252 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5276Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 252 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5276Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 252 DEB

    No nearby objects data