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825 Tanina (A916 FH)
Classification: Main-belt Asteroid          SPK-ID: 2000825
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0755103170583212 1.4276e-08  
a 2.225379461821737 4.1503e-09 au
q 2.057340353084502 3.0981e-08 au
i 3.399826073300048 1.0412e-06 deg
node 101.4057031127434 1.4307e-05 deg
peri 111.3568789207549 2.1408e-05 deg
M 172.433892128818 1.2086e-05 deg
tp 2458619.702590573236
4.0383e-05 TDB
period 1212.563637068722
n .2968916343807505 8.3055e-10 deg/d
Q 2.393418570558973 4.4637e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3303  
   data-arc span      42523 days (116.42 yr)  
   first obs. used      1904-10-17  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39766  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:55:23  

Additional Information
 Earth MOID = 1.05249 au 
 Jupiter MOID = 2.56943 au 
 T_jup = 3.640 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.49   n/a E2021B10  
diameter diameter 13.423 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 6.940 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.]
[Durech, J. (2006) IAU 2006, poster paper.]
[Kryszczynska A.; et al. (2008) Astron. Astrophys.; in preparation.]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Ferrero, A. (2012) Minor Planet Bull. 39, 138-139.]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
geometric albedo albedo 0.275   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.912   0.041 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=5.91, mean=8.52, max.=10.36) deg.
U-B UB 0.525   0.089 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=5.91 deg.
Tholen spectral type spec_T SR   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B S   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)

825 Tanina (A916 FH)          Discovered 1916-Mar-27 by Neujmin, G. at Simeis
Independent discovery Apr. 3 by M. Wolf, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A916 FH = A904 UB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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