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156 Xanthippe (A875 WA)
Classification: Main-belt Asteroid          SPK-ID: 2000156
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 169 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2268090672460764 3.2917e-08  
a 2.728019125803982 8.4427e-09 au
q 2.109279652450924 9.0275e-08 au
i 9.780587570080224 3.8218e-06 deg
node 241.8326478645991 2.1665e-05 deg
peri 338.3125482487177 2.2995e-05 deg
M 209.2866565928602 9.2621e-06 deg
tp 2459689.499245862351
(2022-Apr-19.99924586)
4.3846e-05 TDB
period 1645.771521638846
4.51
7.64e-06
2.092e-08
d
yr
n .2187423924078568 1.0154e-09 deg/d
Q 3.34675859915704 1.0358e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3460  
   data-arc span      43509 days (119.12 yr)  
   first obs. used      1901-09-19  
   last obs. used      2020-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42049  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:51:24  

Additional Information
 Earth MOID = 1.10408 au 
 Jupiter MOID = 1.6678 au 
 T_jup = 3.297 
[ 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 8.7   n/a MPO502154 IRAS observations used: 20
diameter diameter 143.346 km 0.903 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 22.132 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Debehogne, H.; De Sanctis, G.; Zappala, V. (1982) Astron. Astrophys. 108, 197-200.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2019) Minor Planet Bull. 46, 58-60.]
geometric albedo albedo 0.030   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.713   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=10; phase (min.=3.10, mean=10.52, max.=12.83) deg.
U-B UB 0.315   0.037 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=11; phase (min.=3.10, mean=9.86, max.=12.83) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

156 Xanthippe (A875 WA)          Discovered 1875-Nov-22 by Palisa, J. at Pola
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
1952-Feb-22 05:01 < 00:01 Jupiter 1.73208068718123 1.73208013281272 1.73208124155033 2.09705555403006 1.84921645943431 2434064.709066092 0.909591739936186 110.377499106273 44.9314051528889 -69.2457173134525 2075188.44677618 T 169 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:33 2020-Dec-18 01:51
1988-Aug-26 08:45 < 00:01 Jupiter 1.69261855120647 1.69261821848752 1.69261888392541 2.72470660724778 2.53439999410974 2447399.864688054 0.347158469039545 95.8912094612168 17.4314465400975 -85.6453330780017 3040212.92584553 T 169 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:33 2020-Dec-18 01:51
2046-Oct-08 09:13 < 00:01 Jupiter 1.82881275055005 1.82881223316457 1.82881326793553 1.96274786039739 1.71057608264503 2468626.883762892 0.539065954719299 70.6232444310208 55.3913852641564 86.8094229894243 2026674.95289227 T 169 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:33 2020-Dec-18 01:51
2083-Apr-23 09:34 < 00:01 Jupiter 1.65977385317355 1.65977355195462 1.65977415439238 2.63042244122054 2.42867744216962 2481972.898764936 0.950591575222283 170.706281691863 18.3091377629442 -87.3252200131936 2819786.60473708 T 169 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:33 2020-Dec-18 01:51
2119-Oct-26 13:09 00:02 Jupiter 1.89768417534704 1.89768292551576 1.89768542517869 3.02160954610348 2.87009294976274 2495307.047679347 1.53939797158041 114.728207835069 52.6710251444657 76.7147829250258 2569122.66344612 T 169 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:33 2020-Dec-18 01:51
2141-May-22 08:17 00:02 Jupiter 1.93705287743568 1.9370513300676 1.93705442480387 1.93707772343747 1.69638511604499 2503185.844963560 2.07268859462706 93.2872116597319 57.4546652884926 25.286718006943 2116099.51871341 T 169 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:33 2020-Dec-18 01:51
2177-Dec-19 17:00 00:02 Jupiter 1.66445879163603 1.66445821778961 1.66445936550091 2.53591621639168 2.32660606145428 2516546.208208861 2.25514387206955 344.715378630917 19.7036433439794 -83.1410916784051 2624348.24278575 T 169 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:33 2020-Dec-18 01:51

Alternate Designations
 A875 WA = 1936 FG1 = 1942 RP = 1949 BN = A901 SA = A902 VA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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