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255 Oppavia (A886 FB)
Classification: Main-belt Asteroid          SPK-ID: 2000255
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07894562725563357 2.3918e-08  
a 2.745404991868906 8.3512e-09 au
q 2.528667272715067 6.6747e-08 au
i 9.463815178828838 8.2935e-07 deg
node 13.59404444455105 1.5196e-06 deg
peri 155.311957582331 1.5561e-05 deg
M 248.4459997265874 1.8677e-05 deg
tp 2459715.361838434422
(2022-May-15.86183843)
8.7262e-05 TDB
period 1661.52949586845
4.55
7.5813e-06
2.076e-08
d
yr
n .2166678358074136 9.8862e-10 deg/d
Q 2.962142711022744 9.0105e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3245  
   data-arc span      49279 days (134.92 yr)  
   first obs. used      1886-04-01  
   last obs. used      2021-03-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41071  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 10:52:54  

Additional Information
 Earth MOID = 1.53639 au 
 Jupiter MOID = 2.00239 au 
 T_jup = 3.324 
[ 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 10.38   n/a E2021B10 IRAS observations used: 12
diameter diameter 56.939 km 0.474 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 19.499 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Ditteon, R.; Kirkpatrick, E.; Doering, K. (2010) Minor Planet Bull. 37, 1-4.]
[Pilcher, F. (2013) Minor Planet Bull. 40, 158-160.]
geometric albedo albedo 0.038   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.764   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=1.51, mean=7.91, max.=14.32) deg.
U-B UB 0.275   0.056 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=2.18, mean=8.25, max.=14.32) deg.
Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

255 Oppavia (A886 FB)          Discovered 1886-Mar-31 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A886 FB = 1938 VC = 1938 XC = 1945 GD = 1951 SG = A904 EC = A924 TA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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