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270 Anahita (A887 TA)
Classification: Main-belt Asteroid          SPK-ID: 2000270
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 114 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .150595812723337 1.8448e-08  
a 2.198677135250689 2.8051e-09 au
q 1.867565565151393 3.9413e-08 au
i 2.367622965590634 2.7992e-07 deg
node 254.3411374457546 6.4394e-06 deg
peri 80.50555816793307 7.231e-06 deg
M 343.0833086625647 4.0649e-06 deg
tp 2459256.456886441037
(2021-Feb-10.95688644)
1.3518e-05 TDB
period 1190.804910780344
3.26
2.2789e-06
6.239e-09
d
yr
n .3023165228333574 5.7856e-10 deg/d
Q 2.529788705349985 3.2276e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3036  
   data-arc span      44923 days (122.99 yr)  
   first obs. used      1897-11-23  
   last obs. used      2020-11-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47668  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:36:49  

Additional Information
 Earth MOID = .857494 au 
 Jupiter MOID = 2.81561 au 
 T_jup = 3.651 
[ 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 8.83   n/a E2021B10 IRAS observations used: 17
diameter diameter 51.400 km 1.495 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 15.06 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1980) Icarus 43, 20-32.]
[Erikson, A.; Mottola, S.; Lagerros, J.S.V.; Lindgren, M.; et al. (2000) Icarus 147, 487-497.]
[Tungalag, N.; Shevchenko, V.G.; Lupishko, D.F. (2002) Kin. Fiz. Neb. Tel 18, 508-516; Kinematics and Physics of Celestial Bodies 18, ???-???.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.211   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.866   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=10.43, mean=11.31, max.=12.53) deg.
U-B UB 0.530   0.026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=10.43, mean=11.31, max.=12.53) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

270 Anahita (A887 TA)          Discovered 1887-Oct-08 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A887 TA = 1926 VG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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