Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.799209E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-28T12:54:27+0800
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    1 Object 1

    AOE ID 15751
    NORAD ID 15751
    Object Type PAYLOAD
    Country
    CIS CIS
    ← VS →

    2 Object 2

    AOE ID 20508
    NORAD ID 20508
    Object Type PAYLOAD
    Country
    CIS CIS

    Conjunction Constraints

    Parameter COSMOS 1655 NADEZHDA 2
    Time of Closest Approach 2026-10-29T18:13:21+0000
    Collision Probability (Pc) 1.799209E-6
    Conjunction Distance (km) 1.336 km
    Relative Speed (km/s) 0.889 km/s
    Conjunction Risk Parameters R (Radial): -0.486 | I (In-track): -1.242 | C (Cross-track): -0.061
    Collision Risk Index (CRI) 0.4
    X Position (km) -448.035 -446.969
    Position Y (km) -792.062 -792.704
    Position Z (km) -7342.49 -7342.976
    Velocity X (km/s) 6.181 6.604
    Velocity Y (km/s) -3.921 -3.146
    Velocity Z (km/s) 0.048 -0.049

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 1655 NADEZHDA 2
    Semimajor Axis (a) 7370.730 km 7361.356 km
    Eccentricity (e) 0.002807 0.004535
    Inclination (i) 82.9485° 82.9564°
    RAAN 328.9703° 335.9839°
    Perigee Argument 88.9948° 70.5727°
    Mean Anomaly (M) 87.9800° 101.9765°
    Apogee 1013.282 km 1016.600 km
    Perigee 971.904 km 949.838 km
    Orbit Epoch 2026-10-27T20:15:36+0000 2026-10-27T20:19:46+0000

    COSMOS 1655 & NADEZHDA 2 Collision Probability (Pc) Trend

    COSMOS 1655 & NADEZHDA 2 Collision Probability (Pc) TrendNot Available

    COSMOS 1655 & NADEZHDA 2 Miss Distance (Miss Distance) Trend

    COSMOS 1655 & NADEZHDA 2 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 1655Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    NADEZHDA 2Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 1655Collision Probability Trend

    Object 1 Probability TrendNot Available

    NADEZHDA 2Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 1655

    No nearby objects data