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173087 (2007 RJ20)
Classification: Main-belt Asteroid          SPK-ID: 2173087
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07145427989796838 4.0735e-08  
a 3.152316957407172 2.9594e-08 au
q 2.927070419205488 1.2049e-07 au
i 8.844584290616297 5.0848e-06 deg
node 193.7478779946526 2.79e-05 deg
peri 124.5402248502884 4.6611e-05 deg
M 133.2619580614325 3.82e-05 deg
tp 2458243.759576612982
(2018-May-05.25957661)
0.00021442 TDB
period 2044.293483168996
5.60
2.8788e-05
7.882e-08
d
yr
n .1760999596994948 2.4798e-09 deg/d
Q 3.377563495608856 3.1708e-08 au
  Orbit Determination Parameters
   # obs. used (total)      521  
   data-arc span      6765 days (18.52 yr)  
   first obs. used      2001-07-20  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57505  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:59:03  

Additional Information
 Earth MOID = 1.92636 au 
 Jupiter MOID = 1.87966 au 
 T_jup = 3.185 
[ 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 15.0   n/a MPO417932  
diameter diameter 5.795 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173087 (2007 RJ20)          Discovered 2007-Sep-02 by CSS at Catalina
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ 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
1931-May-26 13:00 00:04 Jupiter 1.99681500422396 1.99681417031569 1.99681583813291 2.76789480310978 2.61014713994981 2426488.041645316 3.60576611788466 113.309551777602 27.9323696757693 -81.1295161449379 3161443.23813007 T 20 CATAB v2.0f-lin.ifort 2020-Feb-24 16:59:22 2020-Feb-24 16:59
1941-Nov-07 06:39 00:03 Jupiter 1.90489412295595 1.90489356736484 1.90489467854815 3.38871090906999 3.2548501831633 2430305.776799309 3.05513945768475 121.032214815641 19.243557615404 77.19633909458 2361451.51402398 T 20 CATAB v2.0f-lin.ifort 2020-Feb-24 16:59:22 2020-Feb-24 16:59
1952-May-17 22:53 00:02 Jupiter 1.92845883272783 1.92845817399767 1.92845949146128 4.4228389001504 4.32239041854205 2434150.453755937 2.47055235147353 179.706668466436 20.5677182914475 -83.5253331224126 3266756.98786835 T 20 CATAB v2.0f-lin.ifort 2020-Feb-24 16:59:22 2020-Feb-24 16:59
2036-Nov-19 14:10 < 00:01 Jupiter 1.92632285371422 1.9263223880578 1.92632331937063 3.29705867002571 3.16088228418097 2465017.090504450 0.934550032901403 58.8188203828568 17.483946539106 82.2061036190728 2676814.00304661 T 20 CATAB v2.0f-lin.ifort 2020-Feb-24 16:59:22 2020-Feb-24 16:59
2047-May-26 08:54 00:01 Jupiter 1.93421196792253 1.93421149110831 1.93421244473685 4.39836018418031 4.2976435586372 2468856.870800311 1.29843368538102 95.348163864089 20.6428508115453 -86.7139766871873 3290610.56731053 T 20 CATAB v2.0f-lin.ifort 2020-Feb-24 16:59:22 2020-Feb-24 16:59
2131-Dec-03 04:22 00:05 Jupiter 1.94084592590245 1.94084532309495 1.94084652871115 3.19807167978108 3.05856567311973 2499727.681820885 4.91721242020334 118.992426427392 19.3265370097562 70.5477658413925 1988715.94458238 T 20 CATAB v2.0f-lin.ifort 2020-Feb-24 16:59:22 2020-Feb-24 16:59
2142-Jun-06 07:26 00:05 Jupiter 1.93755169321236 1.9375510640507 1.9375523223847 4.3430017427472 4.24114862295348 2503565.809847392 5.05305408404941 339.416364711701 20.6264907064922 -87.6396426457723 3218922.92267784 T 20 CATAB v2.0f-lin.ifort 2020-Feb-24 16:59:22 2020-Feb-24 16:59

Alternate Designations
 2007 RJ20 = 2005 JE182 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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