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85138 (1981 ED7)
Classification: Main-belt Asteroid          SPK-ID: 2085138
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1022312803443531 4.3703e-08  
a 3.169680361143912 3.4069e-08 au
q 2.845639879541818 1.5006e-07 au
i 13.63360637870306 6.6351e-06 deg
node 217.1029784603349 2.3003e-05 deg
peri 59.76786726359601 4.521e-05 deg
M 263.1522065678731 4.1797e-05 deg
tp 2459555.009332633443
(2021-Dec-06.50933263)
0.00024408 TDB
period 2061.207103163788
5.64
3.3232e-05
9.098e-08
d
yr
n .1746549385781898 2.8159e-09 deg/d
Q 3.493720842746005 3.7552e-08 au
  Orbit Determination Parameters
   # obs. used (total)      481  
   data-arc span      14321 days (39.21 yr)  
   first obs. used      1981-02-08  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58611  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:33:46  

Additional Information
 Earth MOID = 1.85929 au 
 Jupiter MOID = 1.63318 au 
 T_jup = 3.151 
[ 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 14.8   n/a MPO287326  
diameter diameter 6.707 km 0.267 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.039   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85138 (1981 ED7)          Discovered 1981-Mar-06 by Bus, S. J. at Siding Spring
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ 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
1906-Jan-10 00:33 00:05 Jupiter 1.64948514770264 1.64948348516403 1.64948681030734 3.9333600700313 3.80056667102547 2417220.522921139 5.11823724139174 566.081553041051 27.7546037895229 81.1258232065384 2147443.81307126 T 17 CATAB v2.0f-lin.ifort 2020-May-20 15:34:02 2020-May-20 15:34
1916-Oct-10 21:55 00:05 Jupiter 1.69567080538375 1.69566821644756 1.69567339437469 4.26954446813317 4.15089975119712 2421147.412977206 4.63571350530236 517.092020872657 26.9602001814931 -76.1465816915308 2204671.98785282 T 17 CATAB v2.0f-lin.ifort 2020-May-20 15:34:02 2020-May-20 15:34
2012-Dec-09 16:20 < 00:01 Jupiter 1.68534193787901 1.68534133668355 1.68534253907465 3.79008431931118 3.65507525977582 2456271.180784516 0.387632557992206 127.809969228256 26.4589031040522 87.773869185065 2364399.24112825 T 17 CATAB v2.0f-lin.ifort 2020-May-20 15:34:02 2020-May-20 15:34
2023-Sep-10 00:08 < 00:01 Jupiter 1.67111594654808 1.67111529274318 1.67111660035307 4.30503991265083 4.1856478384047 2460197.505290638 0.512714464173674 90.6698203773006 28.7949087840968 -82.1642399411694 2390180.93718221 T 17 CATAB v2.0f-lin.ifort 2020-May-20 15:34:02 2020-May-20 15:34
2119-Nov-19 02:30 00:05 Jupiter 1.73205706274531 1.73205446228776 1.73205966322717 3.5865464006733 3.44750072680619 2495330.604418361 5.10060952968676 371.898526844352 49.6154626054642 68.2927554492742 1898562.15811825 T 17 CATAB v2.0f-lin.ifort 2020-May-20 15:34:02 2020-May-20 15:34
2130-Aug-15 20:10 00:05 Jupiter 1.65245717007354 1.65245590815494 1.652458432072 4.29572478422227 4.17469569384156 2499253.340344017 5.32885198607037 649.301323567342 25.4914963417829 -85.2249280311402 2332138.63275741 T 17 CATAB v2.0f-lin.ifort 2020-May-20 15:34:02 2020-May-20 15:34
2141-Apr-27 09:43 00:07 Jupiter 1.9904685400938 1.99046421503023 1.99047286519131 4.52354179247977 4.42847059627554 2503160.905088071 6.50961369328008 471.535836721144 32.4692047436856 -63.0523107913442 2685247.81736217 T 17 CATAB v2.0f-lin.ifort 2020-May-20 15:34:02 2020-May-20 15:34
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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