Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    3.982609E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-24T23:16:12+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    Name USA 74
    AOE ID 21799
    NORAD ID 21799
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 63864
    NORAD ID 63864
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 74 STARLINK-33863
    Time of Closest Approach 2026-10-24T17:56:10+0000
    Collision Probability (Pc) 3.982609E-6
    Conjunction Distance (km) 1.739 km
    Relative Speed (km/s) 13.574 km/s
    Conjunction Risk Parameters R (Radial): -1.178 | I (In-track): 0.655 | C (Cross-track): 1.099
    Collision Risk Index (CRI) 0.47
    X Position (km) -5570.411 -5571.191
    Position Y (km) 443.223 444.561
    Position Z (km) 3961.659 3962.449
    Velocity X (km/s) 3.767 -4.253
    Velocity Y (km/s) -4.665 -2.868
    Velocity Z (km/s) 5.156 -5.646

    Orbital Parameters 国际轨道数据源

    Parameter USA 74 STARLINK-33863
    Semimajor Axis (a) 7403.087 km 6852.698 km
    Eccentricity (e) 0.088042 0.000380
    Inclination (i) 63.2925° 70.0013°
    RAAN 156.5402° 13.4119°
    Perigee Argument 75.7553° 267.3605°
    Mean Anomaly (M) 293.9553° 92.7136°
    Apogee 1676.736 km 477.163 km
    Perigee 373.164 km 471.959 km
    Orbit Epoch 2026-10-24T00:09:01+0000 2026-10-23T14:39:04+0000

    USA 74 & STARLINK-33863 Collision Probability (Pc) Trend

    USA 74 & STARLINK-33863 Collision Probability (Pc) TrendNot Available

    USA 74 & STARLINK-33863 Miss Distance (Miss Distance) Trend

    USA 74 & STARLINK-33863 Miss Distance (Miss Distance) TrendNot Available

    USA 74Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-33863Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 74Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-33863Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 74

    No nearby objects data