Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.760441E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T13:56:33+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 66728
    NORAD ID 66728
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 69013
    NORAD ID 69013
    Object Type PAYLOAD
    Country
    KR KR

    Conjunction Constraints

    Parameter FLOCK 4H 25 CAS500-2
    Time of Closest Approach 2026-09-13T20:53:01+0000
    Collision Probability (Pc) 1.760441E-6
    Conjunction Distance (km) 2.513 km
    Relative Speed (km/s) 15.096 km/s
    Conjunction Risk Parameters R (Radial): 0.69 | I (In-track): 0.321 | C (Cross-track): 2.395
    Collision Risk Index (CRI) 0.4
    X Position (km) -5854.158 -5854.738
    Position Y (km) 3232.562 3230.123
    Position Z (km) 1619.263 1619.099
    Velocity X (km/s) -1.075 2.055
    Velocity Y (km/s) 1.748 0.014
    Velocity Z (km/s) -7.332 7.334

    Orbital Parameters 国际轨道数据源

    Parameter FLOCK 4H 25 CAS500-2
    Semimajor Axis (a) 6879.274 km 6883.316 km
    Eccentricity (e) 0.000148 0.001123
    Inclination (i) 97.4133° 97.3762°
    RAAN 327.1840° 150.7847°
    Perigee Argument 70.6890° 75.8592°
    Mean Anomaly (M) 289.4506° 284.3891°
    Apogee 502.157 km 512.912 km
    Perigee 500.117 km 497.446 km
    Orbit Epoch 2026-09-11T17:38:58+0000 2026-09-11T16:41:34+0000

    FLOCK 4H 25 & CAS500-2 Collision Probability (Pc) Trend

    FLOCK 4H 25 & CAS500-2 Collision Probability (Pc) TrendNot Available

    FLOCK 4H 25 & CAS500-2 Miss Distance (Miss Distance) Trend

    FLOCK 4H 25 & CAS500-2 Miss Distance (Miss Distance) TrendNot Available

    FLOCK 4H 25Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    CAS500-2Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FLOCK 4H 25Collision Probability Trend

    Object 1 Probability TrendNot Available

    CAS500-2Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FLOCK 4H 25

    No nearby objects data