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202 Chryseis (A879 RA)
Classification: Main-belt Asteroid          SPK-ID: 2000202
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 75 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1039062750739842 3.7902e-08  
a 3.069170830625043 1.1185e-08 au
q 2.750264722049069 1.1546e-07 au
i 8.850481586640074 3.9325e-06 deg
node 136.7263508439454 2.8921e-05 deg
peri .2535893843190408 3.6232e-05 deg
M 268.7981588166741 2.2442e-05 deg
tp 2459498.043578104534
(2021-Oct-10.54357810)
0.00012356 TDB
period 1963.948159309523
5.38
1.0735e-05
2.939e-08
d
yr
n .1833042274020956 1.002e-09 deg/d
Q 3.388076939201018 1.2347e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2576  
   data-arc span      51268 days (140.36 yr)  
   first obs. used      1879-09-22  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44066  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:20:41  

Additional Information
 Earth MOID = 1.76396 au 
 Jupiter MOID = 1.63839 au 
 T_jup = 3.205 
[ 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 7.5   n/a MPO502154 IRAS observations used: 5
diameter diameter 86.15 km 2.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
rotation period rot_per 23.670 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D.; Pilcher, F.; Hamanowa, H.; Hamanowa, H.; Ferrero, A. (2011) Minor Planet Bull. 38, 208-209.]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
geometric albedo albedo 0.2562   0.015 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
B-V BV 0.875   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=4.80, mean=8.43, max.=12.05) deg.
U-B UB 0.475   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=4.80, mean=8.43, max.=12.05) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

202 Chryseis (A879 RA)          Discovered 1879-Sep-11 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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
1928-Sep-04 13:32 00:02 Jupiter 1.9423008553529 1.94229990715924 1.94230180354722 3.21267486165719 3.07393804364738 2425494.063685946 1.53297827092305 82.1093034920665 13.4765016825568 64.546503152237 2713650.55609015 T 75 CATAB v2.0f-lin.ifort 2020-Feb-22 15:20:53 2020-Feb-22 15:21
1938-May-03 12:56 00:01 Jupiter 1.68769248139249 1.68769209815475 1.68769286463043 2.81310434411092 2.62864832299536 2429022.039232761 1.34321298423031 107.528393353922 16.031348792511 -86.367103459842 3005090.00963531 T 75 CATAB v2.0f-lin.ifort 2020-Feb-22 15:20:53 2020-Feb-22 15:21
1987-Nov-15 23:15 < 00:01 Jupiter 1.90605671061921 1.90605614811161 1.90605727312682 3.06153093170538 2.9127653811716 2447115.468778383 0.476766445682845 44.2735730311425 12.4964883635375 65.4631813107185 2879954.1857817 T 75 CATAB v2.0f-lin.ifort 2020-Feb-22 15:20:53 2020-Feb-22 15:21
1997-Jul-13 00:17 < 00:01 Jupiter 1.70562682094805 1.70562646829623 1.70562717359988 2.8323354866357 2.65121003520885 2450642.511549214 0.34547330479194 56.0958308140671 14.6822851319978 87.0167986939095 3009748.68112989 T 75 CATAB v2.0f-lin.ifort 2020-Feb-22 15:20:53 2020-Feb-22 15:21
2047-Jan-21 12:53 < 00:01 Jupiter 1.86822642289917 1.86822594032993 1.86822690546862 2.91883535883077 2.75913635167545 2468732.036633328 0.696060521903229 54.283755962971 11.6326460854027 73.0747607752555 3226514.4409888 T 75 CATAB v2.0f-lin.ifort 2020-Feb-22 15:20:53 2020-Feb-22 15:21
2056-Sep-17 10:15 < 00:01 Jupiter 1.72955848956182 1.72955798687561 1.72955899224803 2.86270860091955 2.68619317704586 2472258.927259358 0.821696837870575 65.406125868354 20.1411976953876 -83.0169819778016 2923953.81156973 T 75 CATAB v2.0f-lin.ifort 2020-Feb-22 15:20:53 2020-Feb-22 15:21
2106-Mar-26 05:03 00:02 Jupiter 1.83000569574861 1.83000495828372 1.83000643321505 2.79211383259306 2.62110565750387 2490344.710620746 1.77585518290489 108.269801070712 10.7496693556722 74.3682551377714 3073943.21641137 T 75 CATAB v2.0f-lin.ifort 2020-Feb-22 15:20:53 2020-Feb-22 15:21
2115-Nov-21 20:07 00:02 Jupiter 1.75925912615593 1.75925826172437 1.75925999058869 2.90539157321481 2.73466072132828 2493872.338309905 1.84248882931097 104.990430308876 24.0743626553241 -73.135647764037 2895665.08185254 T 75 CATAB v2.0f-lin.ifort 2020-Feb-22 15:20:53 2020-Feb-22 15:21
2165-May-25 16:18 00:03 Jupiter 1.79312162362205 1.79312059503463 1.79312265221447 2.68771936782121 2.50581106497055 2511955.179422289 2.83300061710094 173.16898869853 10.7245154544707 75.2484803297928 3005057.15496351 T 75 CATAB v2.0f-lin.ifort 2020-Feb-22 15:20:53 2020-Feb-22 15:21
2175-Jan-22 19:37 00:03 Jupiter 1.79385821794204 1.79385687437291 1.79385956151361 2.96127539810061 2.79728325495081 2515484.317093072 2.82982743369916 138.44938770814 27.3746327296338 -66.8333932022455 2838437.55083621 T 75 CATAB v2.0f-lin.ifort 2020-Feb-22 15:20:53 2020-Feb-22 15:21

Alternate Designations
 A879 RA = 1935 BL = A901 TA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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