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18002 (1999 JJ84)
Classification: Main-belt Asteroid          SPK-ID: 2018002
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06849219254860389 3.9032e-08  
a 2.62706814160946 1.2948e-08 au
q 2.447134484616041 1.0132e-07 au
i 16.16658285145293 4.0146e-06 deg
node 124.1069654268983 1.7856e-05 deg
peri 3.318159088301679 4.5687e-05 deg
M 127.8966816410303 4.0506e-05 deg
tp 2458647.961926208022
(2019-Jun-13.46192621)
0.00017501 TDB
period 1555.268706059212
4.26
1.1498e-05
3.148e-08
d
yr
n .2314712554798194 1.7113e-09 deg/d
Q 2.807001798602878 1.3835e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1619  
   data-arc span      11023 days (30.18 yr)  
   first obs. used      1990-05-26  
   last obs. used      2020-07-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46875  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:19:44  

Additional Information
 Earth MOID = 1.46252 au 
 Jupiter MOID = 2.25488 au 
 T_jup = 3.342 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.02   n/a E2021B10  
diameter diameter 5.141 km 0.294 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.106   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18002 (1999 JJ84)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2004-Jun-01 17:34 < 00:01 Psych 0.0119642720326299 0.0119624564136786 0.0119660877269465 4.90896682449144 4.9089666184869 2453158.231774019 0.657489599788517 106.063065794937 46.8960781049122 35.5666673771984 26082.5554153936 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 02:19:53 2021-Apr-13 02:19

Alternate Designations
 1999 JJ84 = 1990 KA2 = 1998 BL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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