Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.326519E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-26T04:27:04+0800
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    1 Object 1

    AOE ID 33799
    NORAD ID 33799
    Object Type DEBRIS
    Country
    CIS CIS
    ← VS →

    2 Object 2

    AOE ID 59728
    NORAD ID 59728
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter COSMOS 2251 DEB SHIYAN 23 (SY-23)
    Time of Closest Approach 2026-10-25T22:00:15+0000
    Collision Probability (Pc) 2.326519E-6
    Conjunction Distance (km) 2.121 km
    Relative Speed (km/s) 13.411 km/s
    Conjunction Risk Parameters R (Radial): 1.145 | I (In-track): -0.808 | C (Cross-track): -1.591
    Collision Risk Index (CRI) 0.42
    X Position (km) 10.441 9.44
    Position Y (km) 1937.697 1935.959
    Position Z (km) -6722.464 -6721.775
    Velocity X (km/s) -7.486 3.659
    Velocity Y (km/s) 0.844 -6.333
    Velocity Z (km/s) 0.213 -1.822

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2251 DEB SHIYAN 23 (SY-23)
    Semimajor Axis (a) 6985.252 km 6984.911 km
    Eccentricity (e) 0.002385 0.000519
    Inclination (i) 74.0315° 97.7828°
    RAAN 176.6321° 297.8267°
    Perigee Argument 171.7241° 116.4475°
    Mean Anomaly (M) 343.7114° 243.7274°
    Apogee 623.777 km 610.400 km
    Perigee 590.453 km 603.148 km
    Orbit Epoch 2026-10-24T03:30:15+0000 2026-10-25T16:00:47+0000

    COSMOS 2251 DEB & SHIYAN 23 (SY-23) Collision Probability (Pc) Trend

    COSMOS 2251 DEB & SHIYAN 23 (SY-23) Collision Probability (Pc) TrendNot Available

    COSMOS 2251 DEB & SHIYAN 23 (SY-23) Miss Distance (Miss Distance) Trend

    COSMOS 2251 DEB & SHIYAN 23 (SY-23) Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    SHIYAN 23 (SY-23)Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    SHIYAN 23 (SY-23)Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2251 DEB

    No nearby objects data