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21576 McGivney (1998 SH4)
Classification: Main-belt Asteroid          SPK-ID: 2021576
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1383466438026361 3.1858e-08  
a 3.169264644031045 1.7256e-08 au
q 2.730807517206994 1.0053e-07 au
i 2.187271079728409 4.1916e-06 deg
node 137.2167096886835 0.00010224 deg
peri 107.0259496665272 0.00010363 deg
M 70.2458691376264 1.6414e-05 deg
tp 2458798.381110067655
(2019-Nov-10.88111007)
9.4097e-05 TDB
period 2060.801612291585
5.64
1.6831e-05
4.608e-08
d
yr
n .1746893043235174 1.4267e-09 deg/d
Q 3.607721770855096 1.9644e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1624  
   data-arc span      10746 days (29.42 yr)  
   first obs. used      1991-06-06  
   last obs. used      2020-11-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50601  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:48:55  

Additional Information
 Earth MOID = 1.71721 au 
 Jupiter MOID = 1.41281 au 
 T_jup = 3.187 
[ 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 13.83   n/a E2021B10  
diameter diameter 8.893 km 0.433 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.081   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21576 McGivney           Discovered 1998 Sept. 19 by W. G. Dillon at Needville.
Michael J. McGivney (1852-1890), parish priest of St. Mary's Church in New Haven, Connecticut, founded the Knights of Columbus to address the plight of immigrant Catholics.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20061109/MPCPages.arcLast Updated: 2006-11-13

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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
1966-Aug-22 19:25 00:02 Jupiter 1.86898222090927 1.86898114583307 1.86898329598514 2.65065022539522 2.47377178919041 2439360.308972045 1.64968134106635 56.5901691051008 24.6735382742821 -69.1173241244184 1657806.19382846 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 03:49:01 2021-Apr-13 03:49
1977-May-27 19:33 00:01 Jupiter 1.54796003433707 1.54795935201099 1.54796071666209 1.57872513654435 1.18237070034965 2443291.314258929 1.28550960430718 88.3768126995136 66.2177088925682 -15.2386110366931 1647561.47356888 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 03:49:01 2021-Apr-13 03:49
1988-Mar-13 06:18 < 00:01 Jupiter 1.44583522758066 1.44583487380019 1.4458355813604 1.38741072762294 0.867891854765664 2447233.762814881 0.855593983664331 209.226015726379 115.828649745321 14.1903212260394 2155324.00800455 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 03:49:01 2021-Apr-13 03:49
1998-Dec-18 17:46 < 00:01 Jupiter 1.64310087046089 1.64310043003144 1.64310131089016 2.19921846713885 1.95078368412783 2451166.240431056 0.513533929452924 45.7716984739535 7.58123239824802 88.5313203590388 2512429.81256311 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 03:49:01 2021-Apr-13 03:49
2009-Sep-14 06:52 < 00:01 Jupiter 1.99414536883467 1.99414497001509 1.99414576765426 3.75136987213992 3.63638097903374 2455088.786014989 0.245754617922463 31.9241649272413 15.9421723121372 -85.0337658001846 3844159.09173014 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 03:49:01 2021-Apr-13 03:49
2085-Sep-05 13:58 00:02 Jupiter 1.9534650620249 1.95346397913485 1.95346614491495 2.93082751852547 2.77894762125438 2482839.081987506 1.62442401412411 65.6593096382006 23.9713418238816 -63.1378709122177 1962984.50578915 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 03:49:01 2021-Apr-13 03:49
2096-Jun-09 14:45 00:02 Jupiter 1.6133848873921 1.61338393822178 1.61338583656106 1.74301328347534 1.41000033779305 2486769.114841400 1.95867908393031 61.5138582393619 49.3424859752274 68.8449628976934 1273278.85485108 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 03:49:01 2021-Apr-13 03:49
2107-Mar-24 10:41 00:02 Jupiter 1.45053379715565 1.45053345029642 1.45053414401413 1.34731356162728 0.804597327216282 2490707.944890800 2.29073587250915 279.63135996488 135.481922251705 12.1980184490196 2044865.1544184 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 03:49:01 2021-Apr-13 03:49
2117-Dec-31 13:19 00:03 Jupiter 1.58543434481856 1.58543292743294 1.58543576220688 1.95858836373247 1.6635994303497 2494643.054919808 2.82404293328202 176.614756798541 17.4049048733992 76.9915458522107 2135144.26312257 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 03:49:01 2021-Apr-13 03:49
2128-Sep-24 04:39 00:03 Jupiter 1.91484507499728 1.91484307591564 1.91484707408109 3.42741661382935 3.29582982904575 2498562.694080066 3.14014804063945 147.964048763702 19.4015027872078 -59.2052874633368 2441417.77859764 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 03:49:01 2021-Apr-13 03:49

Alternate Designations
 1998 SH4 = 1991 JK7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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