Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    4.344733E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T13:05:01+0800
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    1 Object 1

    AOE ID 20571
    NORAD ID 20571
    Object Type ROCKET BODY
    Country
    US US
    VS

    2 Object 2

    AOE ID 59676
    NORAD ID 59676
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter DELTA 2 R/B STARLINK-31884
    Time of Closest Approach 2026-09-12T22:03:56+0000
    Collision Probability (Pc) 4.344733E-6
    Conjunction Distance (km) 1.265 km
    Relative Speed (km/s) 3.339 km/s
    Conjunction Risk Parameters R (Radial): 1.109 | I (In-track): -0.591 | C (Cross-track): 0.145
    Collision Risk Index (CRI) 0.48
    X Position (km) -4633.167 -4634.232
    Position Y (km) -4630.681 -4630.991
    Position Z (km) 2028.346 2028.954
    Velocity X (km/s) 4.865 3.096
    Velocity Y (km/s) -5.789 -5.16
    Velocity Z (km/s) -1.926 -4.687

    Orbital Parameters 国际轨道数据源

    Parameter DELTA 2 R/B STARLINK-31884
    Semimajor Axis (a) 7194.780 km 6861.064 km
    Eccentricity (e) 0.046706 0.000080
    Inclination (i) 22.7414° 43.0011°
    RAAN 104.7158° 87.0852°
    Perigee Argument 100.4796° 295.7456°
    Mean Anomaly (M) 264.8619° 64.3314°
    Apogee 1152.684 km 483.474 km
    Perigee 480.602 km 482.380 km
    Orbit Epoch 2026-09-10T22:20:48+0000 2026-09-08T21:40:30+0000

    DELTA 2 R/B & STARLINK-31884 Collision Probability (Pc) Trend

    DELTA 2 R/B & STARLINK-31884 Collision Probability (Pc) TrendNot Available

    DELTA 2 R/B & STARLINK-31884 Miss Distance (Miss Distance) Trend

    DELTA 2 R/B & STARLINK-31884 Miss Distance (Miss Distance) TrendNot Available

    DELTA 2 R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31884Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    DELTA 2 R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31884Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with DELTA 2 R/B

    No nearby objects data