Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

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 79 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1039062638865183 3.6945e-08  
a 3.069170825946152 1.0665e-08 au
q 2.750264752192587 1.1315e-07 au
i 8.850481073019282 3.8166e-06 deg
node 136.7263499751062 2.8903e-05 deg
peri .2535889143104002 3.6188e-05 deg
M 268.7981622838272 2.2272e-05 deg
tp 2459498.043558052044
(2021-Oct-10.54355805)
0.00012254 TDB
period 1963.948154818522
5.38
1.0237e-05
2.803e-08
d
yr
n .1833042278212613 9.5546e-10 deg/d
Q 3.388076899699715 1.1773e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2753  
   data-arc span      51555 days (141.15 yr)  
   first obs. used      1879-09-22  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43488  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:51:44  

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. 2020-October); 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

[ 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
1928-Sep-04 13:32 00:01 Jupiter 1.94230095363007 1.9423000360296 1.9423018712311 3.21267522124862 3.07393842664659 2425494.063824742 1.4663798411406 79.2059652117973 13.4516937694606 64.5500169167637 2730810.07329899 T 79 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:51 2020-Dec-18 01:51
1938-May-03 12:57 00:01 Jupiter 1.6876924824672 1.68769209931647 1.68769286561813 2.8131043718825 2.62864835283729 2429022.039366539 1.28336162898094 103.130927887703 15.7965102252182 -86.1638558631626 3072758.81654092 T 79 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:51 2020-Dec-18 01:51
1987-Nov-15 23:15 < 00:01 Jupiter 1.90605673921355 1.90605618455392 1.90605729387317 3.06153107561949 2.91276553472468 2447115.468812709 0.465352519764745 43.6116307176309 12.4251557774013 65.4896415667394 2908671.66535393 T 79 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:51 2020-Dec-18 01:51
1997-Jul-13 00:17 < 00:01 Jupiter 1.70562685226762 1.70562650703827 1.70562719749697 2.8323355333137 2.65121008851533 2450642.511571347 0.339665242261001 55.293659779034 14.4384183944465 87.4807568995448 3092870.15648967 T 79 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:51 2020-Dec-18 01:51
2047-Jan-21 12:53 < 00:01 Jupiter 1.86822638611411 1.86822590989468 1.86822686233365 2.9188353238904 2.75913631147729 2468732.036556830 0.652809643523571 52.013710432206 11.5764030950053 72.7542947022169 3232025.19566306 T 79 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:51 2020-Dec-18 01:51
2056-Sep-17 10:15 < 00:01 Jupiter 1.72955856785416 1.72955809642717 1.72955903928115 2.86270869038652 2.68619328064479 2472258.927175221 0.777143384332538 64.1161037452328 19.1514499279531 -83.7765187629726 3017440.43212956 T 79 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:51 2020-Dec-18 01:51
2106-Mar-26 05:03 00:02 Jupiter 1.83000560130693 1.83000488968034 1.83000631293488 2.7921136915557 2.62110549815168 2490344.710429351 1.6777098178357 102.580505366102 10.7222413088611 74.2425620074646 3077320.6042079 T 79 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:51 2020-Dec-18 01:51
2115-Nov-21 20:07 00:02 Jupiter 1.75925926643469 1.75925845919008 1.7592600736803 2.90539174983753 2.73466092301655 2493872.338113403 1.74619370517009 101.058860885452 23.164434630249 -73.8689737674841 2972875.25815379 T 79 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:51 2020-Dec-18 01:51
2165-May-25 16:18 00:03 Jupiter 1.79312148484909 1.79312049786036 1.7931224718423 2.68771924270237 2.50581091617954 2511955.179129403 2.68342066161552 164.058798950969 10.6937367674717 75.1705908162313 3013379.74368507 T 79 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:51 2020-Dec-18 01:51
2175-Jan-22 19:36 00:03 Jupiter 1.79385842886751 1.79385716846408 1.79385968927309 2.96127568746367 2.79728358112568 2515484.316796225 2.68564280830218 132.57624114503 26.481390015293 -67.4207748497584 2906057.41176571 T 79 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:51 2020-Dec-18 01:51

Alternate Designations
 A879 RA = 1935 BL = A901 TA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-17 22:59 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin