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8990 Compassion (1980 DN)
Classification: Main-belt Asteroid          SPK-ID: 2008990
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09353949506062272 3.966e-08  
a 3.157870181969261 1.4934e-08 au
q 2.86248459968086 1.2447e-07 au
i 8.085354297518171 3.3316e-06 deg
node 128.839139208217 3.0837e-05 deg
peri 68.52218140029338 3.6032e-05 deg
M 20.55529757395959 1.7633e-05 deg
tp 2458883.466254794621
(2020-Feb-03.96625479)		 0.00010053 TDB
period 2049.69780283364
5.61		 1.454e-05
3.981e-08		 d
yr
n .1756356471194494 1.2459e-09 deg/d
Q 3.453255764257663 1.6331e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2160  
   data-arc span      14813 days (40.56 yr)  
   first obs. used      1980-02-14  
   last obs. used      2020-09-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47092  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:16:57  

Additional Information
 Earth MOID = 1.87433 au 
 Jupiter MOID = 1.56089 au 
 T_jup = 3.184 
[ 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 12.7   n/a MPO384837  
diameter diameter 16.624 km 0.264 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8990 Compassion           Discovered 1980 Feb. 19 at the Klet Observatory.
Named by the Committee for Small-Body Nomenclature to honor the compassion of people around the world for the friends and families of the victims of disasters, exemplified by the terrorist attacks on New York and Washington on 2001 Sept. 11, with the hope that they will overcome their sorrow.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20011002/MPCPages.arcLast Updated: 2009-05-11

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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
1906-Jul-05 04:41 00:02 Jupiter 1.94757665820278 1.9475755163386 1.94757780006695 3.28644081721686 3.1513284882971 2417396.695350161 2.27407635381265 69.9057335410645 25.9864731286728 -60.5755174584081 1856887.96153265 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:17:03 2020-Nov-13 03:17
1916-Dec-02 08:25 00:02 Jupiter 1.61610078964248 1.61610006784344 1.61610151144373 1.73027626943427 1.39485703699263 2421199.850739246 2.18137551048575 148.694936127617 44.3246329289834 85.1579611398014 2103266.14830566 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:17:03 2020-Nov-13 03:17
1927-May-06 23:49 00:02 Jupiter 1.58214893734428 1.58214835860397 1.58214951608544 2.37355682224027 2.13612917833293 2425007.492351897 1.77770519686229 118.654013259068 19.4986909844425 86.8379408535098 2340830.89377702 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:17:03 2020-Nov-13 03:17
1937-Nov-04 01:57 00:01 Jupiter 1.93696432094157 1.93696343989632 1.93696520198727 3.59890714990945 3.4752762545352 2428841.581190921 1.47911018201835 73.8423394822057 23.24306386236 -64.2328391827632 3208988.06018277 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:17:03 2020-Nov-13 03:17
2001-Sep-12 07:54 < 00:01 Jupiter 1.99204678558631 1.9920464116585 1.99204715951412 3.58297813260759 3.46227209492665 2452164.829427345 0.325541123210543 39.8568715567456 15.7345431544791 88.3936540981137 4158877.13293796 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:17:03 2020-Nov-13 03:17
2012-Feb-20 11:46 < 00:01 Jupiter 1.65075913447474 1.65075870202766 1.65075956692153 1.80946959050183 1.49931930757434 2455977.990184570 0.23657219552449 64.4690199782137 34.297080151962 85.5031621684703 2263855.19271972 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:17:03 2020-Nov-13 03:17
2022-Jul-19 10:31 < 00:01 Jupiter 1.56034664008653 1.56034623796363 1.56034704220934 2.12888136816301 1.85646190971963 2459779.937864379 0.332962301730596 47.6839260780353 25.3310619304111 65.5577511005528 2184569.77560489 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:17:03 2020-Nov-13 03:17
2033-Jan-12 17:09 < 00:01 Jupiter 1.8633066767658 1.86330614256216 1.86330721096945 3.41743463672895 3.28172193947895 2463610.214626845 0.533838147980398 48.2311908262574 20.7609010400539 -79.1277618826516 3455530.6178076 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:17:03 2020-Nov-13 03:17
2107-May-16 00:46 00:02 Jupiter 1.69392384619582 1.69392288015454 1.69392481223604 2.0403008799964 1.77841393934825 2490760.531685298 2.14392543525072 71.0636060986081 30.2556440889621 -71.7329051472835 1110381.77967684 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:17:03 2020-Nov-13 03:17
2117-Oct-06 16:04 00:02 Jupiter 1.55607744634217 1.55607700137051 1.55607789131374 1.88149169934448 1.56567790870426 2494557.169488449 2.370741710063 178.953619657732 39.9991004552025 66.6832229341666 1944577.35653437 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:17:03 2020-Nov-13 03:17
2128-Mar-26 01:44 00:03 Jupiter 1.79941172165784 1.79941021443452 1.7994132288838 3.21298325277448 3.06297528067737 2498380.572100548 2.50563908628666 143.522369462321 22.6363377954633 -67.3386941343523 2993261.89934502 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:17:03 2020-Nov-13 03:17

Alternate Designations
 1980 DN = 1989 WZ6 = 1991 BN4 = 1997 CB3 
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