Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    4.842377E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-17T04:20:31+0800
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    1 Object 1

    AOE ID 21422
    NORAD ID 21422
    Object Type PAYLOAD
    Country
    CIS CIS
    ← VS →

    2 Object 2

    AOE ID 64586
    NORAD ID 64586
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 2151 LEMUR 2 SEJONG-2
    Time of Closest Approach 2026-10-19T08:04:56+0000
    Collision Probability (Pc) 4.842377E-6
    Conjunction Distance (km) 1.669 km
    Relative Speed (km/s) 15.115 km/s
    Conjunction Risk Parameters R (Radial): 1.607 | I (In-track): 0.02 | C (Cross-track): -0.451
    Collision Risk Index (CRI) 0.49
    X Position (km) 443.793 444.214
    Position Y (km) 1806.39 1806.492
    Position Z (km) -6703.125 -6704.737
    Velocity X (km/s) -5.102 5.219
    Velocity Y (km/s) -5.29 5.184
    Velocity Z (km/s) -1.756 1.743

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2151 LEMUR 2 SEJONG-2
    Semimajor Axis (a) 6942.829 km 6952.601 km
    Eccentricity (e) 0.001337 0.000259
    Inclination (i) 82.4968° 97.7806°
    RAAN 230.7825° 43.4810°
    Perigee Argument 39.3967° 287.6672°
    Mean Anomaly (M) 320.8227° 72.4267°
    Apogee 573.977 km 576.262 km
    Perigee 555.407 km 572.666 km
    Orbit Epoch 2026-10-16T06:55:57+0000 2026-10-16T03:27:04+0000

    COSMOS 2151 & LEMUR 2 SEJONG-2 Collision Probability (Pc) Trend

    COSMOS 2151 & LEMUR 2 SEJONG-2 Collision Probability (Pc) TrendNot Available

    COSMOS 2151 & LEMUR 2 SEJONG-2 Miss Distance (Miss Distance) Trend

    COSMOS 2151 & LEMUR 2 SEJONG-2 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2151Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    LEMUR 2 SEJONG-2Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2151Collision Probability Trend

    Object 1 Probability TrendNot Available

    LEMUR 2 SEJONG-2Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2151

    No nearby objects data