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31982 Johnwallis (2000 HS20)
Classification: Outer Main-belt Asteroid          SPK-ID: 2031982
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1511843305147147 4.2396e-08  
a 3.200972472884061 2.7682e-08 au
q 2.717035592575054 1.331e-07 au
i 2.252066118318674 5.3236e-06 deg
node 238.7551416606691 0.00013552 deg
peri 24.91509831724014 0.00013685 deg
M 166.4695509440111 1.9853e-05 deg
tp 2458033.216803783058
(2017-Oct-06.71680378)
0.00011237 TDB
period 2091.805670547024
5.73
2.7135e-05
7.429e-08
d
yr
n .1721001166928939 2.2325e-09 deg/d
Q 3.684909353193069 3.1867e-08 au
  Orbit Determination Parameters
   # obs. used (total)      538  
   data-arc span      8460 days (23.16 yr)  
   first obs. used      1996-10-05  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57127  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 02:21:11  

Additional Information
 Earth MOID = 1.70158 au 
 Jupiter MOID = 1.39363 au 
 T_jup = 3.175 
[ 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 MPO452620  
diameter diameter 4.814 km 1.817 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.110   0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

31982 Johnwallis           Discovered 2000 Apr. 30 by P. G. Comba at Prescott.
John Wallis (1616-1703) was an professor of geometry at Oxford. His fame rests on a formula that represents \pi as an infinite product and on the invention of the symbol {i}nfty for infinity.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020328/MPCPages.arcLast Updated: 2003-10-02

[ 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
1905-Oct-01 22:36 00:04 Jupiter 1.44635382583259 1.44635326482734 1.44635438683695 1.56019952760016 1.12381956449321 2417120.441819014 3.53910843499358 157.406754108788 119.306433798143 0.355517037000957 1392166.4065316 T 19 CATAB v2.0f-lin.ifort 2019-Dec-14 02:21:22 2019-Dec-14 02:21
1916-Dec-12 08:03 00:03 Jupiter 1.55482212290747 1.55482072576153 1.55482352005314 1.89678394339187 1.58374450840722 2421209.835087158 3.21958838621296 134.997917882646 39.5263904726153 73.5550812274894 1385039.60239704 T 19 CATAB v2.0f-lin.ifort 2019-Dec-14 02:21:22 2019-Dec-14 02:21
1928-Jan-11 14:37 00:03 Jupiter 1.77688235375981 1.77688056034284 1.7768841471791 2.79604928637366 2.6200211996559 2425257.109277152 2.96134394877842 151.287087493298 15.2903108440295 -71.6625721096908 1771488.04051802 T 19 CATAB v2.0f-lin.ifort 2019-Dec-14 02:21:22 2019-Dec-14 02:21
2038-Oct-10 03:11 00:01 Jupiter 1.89670005503404 1.89669928495172 1.89670082511614 2.52942625345834 2.34624024389078 2465706.632302743 1.08426725855528 67.115841726021 20.6899670857869 -88.5071928248607 2004425.48835138 T 19 CATAB v2.0f-lin.ifort 2019-Dec-14 02:21:22 2019-Dec-14 02:21
2049-Nov-26 02:01 00:02 Jupiter 1.6608017681538 1.66080091237229 1.66080262393465 1.8513902361932 1.5516537668305 2469771.584285023 1.63440354935461 82.3822107507803 33.1802916235556 -88.4267234520743 1592650.61448261 T 19 CATAB v2.0f-lin.ifort 2019-Dec-14 02:21:22 2019-Dec-14 02:21
2061-Feb-09 11:56 00:02 Jupiter 1.50785249680229 1.50785181701215 1.50785317659285 1.56885466887857 1.15664300592393 2473864.997566715 2.2416830688124 150.993624631923 74.378956093567 -53.0235624025666 2392627.48101992 T 19 CATAB v2.0f-lin.ifort 2019-Dec-14 02:21:22 2019-Dec-14 02:21
2072-May-14 20:00 00:03 Jupiter 1.45943869298822 1.45943826084998 1.45943912512621 1.56545737374283 1.13574016135667 2477977.333062034 3.08918362547144 151.51728796312 104.190423753467 -32.0655914672733 1692350.49192821 T 19 CATAB v2.0f-lin.ifort 2019-Dec-14 02:21:22 2019-Dec-14 02:21
2083-Aug-05 01:02 00:04 Jupiter 1.52576642587701 1.52576494912805 1.52576790262537 1.82808484324998 1.49385507895881 2482076.542929497 4.34104154239886 150.059079721069 57.4657437300074 67.9177436139938 1186218.43843634 T 19 CATAB v2.0f-lin.ifort 2019-Dec-14 02:21:22 2019-Dec-14 02:21
2094-Sep-17 19:34 00:06 Jupiter 1.7062825918115 1.70627967026114 1.70628551336962 2.53004296381061 2.32557293116799 2486138.315093719 5.71386239754793 255.945018464125 13.701270914261 -76.5358700812389 1659209.13861529 T 19 CATAB v2.0f-lin.ifort 2019-Dec-14 02:21:22 2019-Dec-14 02:21
2105-Oct-01 01:57 00:07 Jupiter 1.96389263097052 1.96388896010312 1.96389630185287 3.7580240072464 3.64144873579498 2490168.581059478 6.5776600348759 334.933343996967 22.8601530296332 -63.6785548144883 2188621.7279429 T 19 CATAB v2.0f-lin.ifort 2019-Dec-14 02:21:22 2019-Dec-14 02:21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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