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JPL Small-Body Database Browser
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30947 (1994 JW)
Classification: Main-belt Asteroid          SPK-ID: 2030947
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1397105124476821 4.0627e-08  
a 2.686066013225382 1.265e-08 au
q 2.310794354049361 1.1133e-07 au
i 13.59775779320584 5.7342e-06 deg
node 65.3939754998873 1.8589e-05 deg
peri 30.66533244675531 2.8229e-05 deg
M 70.61115230282383 2.0795e-05 deg
tp 2458685.112666342047
(2019-Jul-20.61266634)
9.2256e-05 TDB
period 1607.953367336886
4.40
1.1359e-05
3.11e-08
d
yr
n .2238870898328581 1.5816e-09 deg/d
Q 3.061337672401402 1.4417e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1516  
   data-arc span      9407 days (25.75 yr)  
   first obs. used      1994-05-04  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47541  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 02:12:08  

Additional Information
 Earth MOID = 1.33698 au 
 Jupiter MOID = 2.21053 au 
 T_jup = 3.320 
[ 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 13.5   n/a MPO385005  
diameter diameter 5.997 km 0.337 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.235   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

30947 (1994 JW)          Discovered 1994-May-04 by Helin, E. F. at Palomar
Reference: 20011130/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
2146-Sep-07 10:29 00:07 Vesta 0.049989766532328 0.0499570405356942 0.050022495997526 5.02199472319648 5.02199424924133 2505119.936660387 7.12048929763736 1755.54838677748 47.1068177810629 21.9635916401382 59344.3072263991 T 23 CATAB v2.0f-lin.ifort 2020-Feb-23 02:12:24 2020-Feb-23 02:12

Alternate Designations
 1994 JW = 1998 GT1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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