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21747 Justsolomon (1999 RD170)
Classification: Main-belt Asteroid          SPK-ID: 2021747
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1912888049612706 2.921e-08  
a 2.720375443928321 1.1575e-08 au
q 2.199998076213286 7.96e-08 au
i 2.23912879566003 4.0894e-06 deg
node 198.9380290828173 8.7498e-05 deg
peri 250.721886961371 8.823e-05 deg
M 235.5196165556697 1.2243e-05 deg
tp 2459963.182906130302
(2023-Jan-18.68290613)
5.7846e-05 TDB
period 1638.859397457941
4.49
1.046e-05
2.864e-08
d
yr
n .2196649697700737 1.402e-09 deg/d
Q 3.240752811643356 1.379e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1296  
   data-arc span      12676 days (34.70 yr)  
   first obs. used      1986-11-25  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5247  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:45:14  

Additional Information
 Earth MOID = 1.21777 au 
 Jupiter MOID = 1.97577 au 
 T_jup = 3.331 
[ 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 14.75   n/a MPO636390  
diameter diameter 5.892 km 0.229 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.081   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21747 Justsolomon           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Justin Moore Solomon (b. 1987) was awarded first place in the 2005 Intel International Science and Engineering Fair for his computer science project. He attends the Thomas Jefferson High School for Science and Technology, Alexandria, Virginia, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050822/MPCPages.arcLast Updated: 2005-08-26

[ 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
1913-Aug-08 17:04 00:02 Jupiter 1.97893662054365 1.97893636084522 1.97893688024209 1.96583304366769 1.73449171731451 2419988.210936274 1.9034390081535 47.9484990673453 16.4837569065205 -78.4274616956146 3007166.68918505 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:45:17 2021-Aug-24 22:45
1949-Aug-19 12:23 00:01 Jupiter 1.9908869441634 1.99088655124618 1.9908873370804 2.12887241745847 1.9186448630825 2433148.015908743 1.23925168279188 51.508334507754 7.46874086402301 -80.5631391184111 2545787.56078049 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:45:17 2021-Aug-24 22:45
2115-Jan-29 12:01 00:02 Jupiter 1.98867286766705 1.98867247054186 1.98867326479213 1.9422251951253 1.70891535939743 2493576.000616294 1.80786639987726 42.3963865327838 14.964733886508 -83.9410171649628 3291028.77617284 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:45:17 2021-Aug-24 22:45
2151-Feb-10 01:05 00:02 Jupiter 1.9695134252963 1.96951316466583 1.96951368592678 1.97513285547975 1.74385091660234 2506736.545359754 2.48868511466052 70.4018214545014 14.1968386082886 -74.6139292222619 3145521.50028027 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:45:17 2021-Aug-24 22:45
2187-Feb-21 07:53 00:03 Jupiter 1.99185969886303 1.99185914841556 1.99186024931163 2.20178104849954 1.99933880971186 2519896.828352534 3.19351141552943 121.41958894445 5.13376625350924 -80.2506196330329 2698637.22532329 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:45:17 2021-Aug-24 22:45

Alternate Designations
 1999 RD170 = 1986 WD4 = 1997 EY46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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