Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.030908E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-19T01:41:20+0800
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    1 Object 1

    AOE ID 34036
    NORAD ID 34036
    Object Type DEBRIS
    Country
    CIS CIS
    ← VS →

    2 Object 2

    AOE ID 53003
    NORAD ID 53003
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 2251 DEB STARLINK-4255
    Time of Closest Approach 2026-10-18T20:22:30+0000
    Collision Probability (Pc) 1.030908E-6
    Conjunction Distance (km) 2.896 km
    Relative Speed (km/s) 8.653 km/s
    Conjunction Risk Parameters R (Radial): 2.891 | I (In-track): -0.134 | C (Cross-track): -0.095
    Collision Risk Index (CRI) 0.35
    X Position (km) 1498.232 1499.023
    Position Y (km) 3849.076 3850.706
    Position Z (km) -5456.623 -5458.881
    Velocity X (km/s) -5.21 -6.819
    Velocity Y (km/s) -3.773 3.371
    Velocity Z (km/s) -4.104 0.505

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2251 DEB STARLINK-4255
    Semimajor Axis (a) 6846.927 km 6840.852 km
    Eccentricity (e) 0.001686 0.000117
    Inclination (i) 73.9966° 53.1563°
    RAAN 228.3578° 154.7351°
    Perigee Argument 199.7304° 88.4464°
    Mean Anomaly (M) 160.3250° 271.6673°
    Apogee 480.337 km 463.518 km
    Perigee 457.243 km 461.912 km
    Orbit Epoch 2026-10-17T22:58:52+0000 2026-10-18T00:25:24+0000

    COSMOS 2251 DEB & STARLINK-4255 Collision Probability (Pc) Trend

    COSMOS 2251 DEB & STARLINK-4255 Collision Probability (Pc) TrendNot Available

    COSMOS 2251 DEB & STARLINK-4255 Miss Distance (Miss Distance) Trend

    COSMOS 2251 DEB & STARLINK-4255 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4255Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4255Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2251 DEB

    No nearby objects data