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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 175 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2264775896037096 1.2034e-08  
a 2.72867939489318 8.0107e-09 au
q 2.110694662736464 3.4108e-08 au
i 9.77789659045594 3.5224e-07 deg
node 241.8238752261997 2.4205e-06 deg
peri 338.2822453277734 4.585e-06 deg
M 295.9060312618752 7.6235e-06 deg
tp 2459689.617573911710
(2022-Apr-20.11757391)
3.5671e-05 TDB
period 1646.369052903537
4.51
7.25e-06
1.985e-08
d
yr
n .2186630022989705 9.6291e-10 deg/d
Q 3.346664127049897 9.8249e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3838  
   data-arc span      43701 days (119.65 yr)  
   first obs. used      1901-09-19  
   last obs. used      2021-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40565  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:36:36  

Additional Information
 Earth MOID = 1.10604 au 
 Jupiter MOID = 1.6656 au 
 T_jup = 3.297 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456485.5 (2013-Jul-12.0) TDB
Reference: JPL 175 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2266374679012679 1.2031e-08  
q 2.110010501884461 3.4097e-08 au
tp 2456399.494930910854
(2013-Apr-16.99493091)
2.8744e-05 TDB
node 241.8651119130989 2.422e-06 deg
peri 338.4715694247885 4.5788e-06 deg
i 9.775982122124853 3.5227e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3838  
   data-arc span      43701 days (119.65 yr)  
   first obs. used      1901-09-19  
   last obs. used      2021-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40565  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:36:36  

Additional Information
 Jupiter MOID = 1.6656 au 
 T_jup = 3.297 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.447449246828736E-16 -4.035228394956185E-16 6.943358719737136E-14 -1.126980759457523E-14 2.013085678024347E-14 2.144268763819488E-15
q -4.035228394956185E-16 1.162581270277809E-15 -1.397600630598727E-13 3.098464904804636E-14 -4.454895316309966E-14 -6.032389017635559E-15
tp 6.943358719737136E-14 -1.397600630598727E-13 8.262216339098102E-10 1.291729088034372E-11 1.171085802319326E-10 -2.956541038447503E-12
node -1.126980759457523E-14 3.098464904804636E-14 1.291729088034372E-11 5.866312288835536E-12 -2.885461324487054E-12 -5.158971912112264E-13
peri 2.013085678024347E-14 -4.454895316309966E-14 1.171085802319326E-10 -2.885461324487054E-12 2.096583452054056E-11 1.826892543407419E-14
i 2.144268763819488E-15 -6.032389017635559E-15 -2.956541038447503E-12 -5.158971912112264E-13 1.826892543407419E-14 1.240946585438345E-13

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 8.71   n/a E2021B10 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

[ show close-approach data ]
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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