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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 77 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1039062664209644 3.7038e-08  
a 3.069170827037651 1.0726e-08 au
q 2.750264745392026 1.1337e-07 au
i 8.850481324477519 3.8277e-06 deg
node 136.7263505250926 2.8909e-05 deg
peri .2535888776420585 3.6199e-05 deg
M 268.7981612906314 2.23e-05 deg
tp 2459498.043563735750
(2021-Oct-10.54356374)		 0.0001227 TDB
period 1963.94815586619
5.38		 1.0296e-05
2.819e-08		 d
yr
n .1833042277234776 9.6094e-10 deg/d
Q 3.388076908683277 1.1841e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2742  
   data-arc span      51532 days (141.09 yr)  
   first obs. used      1879-09-22  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43427  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:32:17  

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

[ show close-approach data ]
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 2020-Nov-28 15:19 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin