Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.545051E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-27T21:07:52+0800
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    1 Object 1

    AOE ID 21891
    NORAD ID 21891
    Object Type ROCKET BODY
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 66781
    NORAD ID 66781
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter DELTA 2 R/B(1) LEMUR-2-CELIJO-SB-PK
    Time of Closest Approach 2026-10-27T15:57:17+0000
    Collision Probability (Pc) 2.545051E-6
    Conjunction Distance (km) 1.917 km
    Relative Speed (km/s) 10.337 km/s
    Conjunction Risk Parameters R (Radial): 1.504 | I (In-track): -0.86 | C (Cross-track): 0.819
    Collision Risk Index (CRI) 0.43
    X Position (km) 6642.99 6641.225
    Position Y (km) 567.711 568.256
    Position Z (km) 1928.873 1929.381
    Velocity X (km/s) -1.05 -2.005
    Velocity Y (km/s) 7.365 -1.207
    Velocity Z (km/s) 1.517 7.212

    Orbital Parameters 国际轨道数据源

    Parameter DELTA 2 R/B(1) LEMUR-2-CELIJO-SB-PK
    Semimajor Axis (a) 6962.779 km 6940.953 km
    Eccentricity (e) 0.003746 0.000547
    Inclination (i) 19.9936° 97.5160°
    RAAN 315.4626° 6.3683°
    Perigee Argument 0.2192° 66.5127°
    Mean Anomaly (M) 359.8242° 293.6672°
    Apogee 610.725 km 566.610 km
    Perigee 558.559 km 559.022 km
    Orbit Epoch 2026-10-27T04:29:50+0000 2026-10-26T22:17:13+0000

    DELTA 2 R/B(1) & LEMUR-2-CELIJO-SB-PK Collision Probability (Pc) Trend

    DELTA 2 R/B(1) & LEMUR-2-CELIJO-SB-PK Collision Probability (Pc) TrendNot Available

    DELTA 2 R/B(1) & LEMUR-2-CELIJO-SB-PK Miss Distance (Miss Distance) Trend

    DELTA 2 R/B(1) & LEMUR-2-CELIJO-SB-PK Miss Distance (Miss Distance) TrendNot Available

    DELTA 2 R/B(1)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    LEMUR-2-CELIJO-SB-PKMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    DELTA 2 R/B(1)Collision Probability Trend

    Object 1 Probability TrendNot Available

    LEMUR-2-CELIJO-SB-PKCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with DELTA 2 R/B(1)

    No nearby objects data