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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07894562984409711 3.7265e-08  
a 2.745404994150848 8.5153e-09 au
q 2.528667267710479 1.0243e-07 au
i 9.463816843019607 4.27e-06 deg
node 13.59402586829995 1.9891e-05 deg
peri 155.3119478612422 3.0823e-05 deg
M 248.4460243848375 2.4647e-05 deg
tp 2459715.361725269647
(2022-May-15.86172527)
0.00011444 TDB
period 1661.52949794001
4.55
7.7303e-06
2.116e-08
d
yr
n .2166678355372768 1.008e-09 deg/d
Q 2.962142720591216 9.1876e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3171  
   data-arc span      49235 days (134.80 yr)  
   first obs. used      1886-04-01  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41367  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:44:51  

Additional Information
 Earth MOID = 1.53639 au 
 Jupiter MOID = 2.00239 au 
 T_jup = 3.324 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456497.5 (2013-Jul-24.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0769711353199747 3.7524e-08  
q 2.534510449536573 1.0293e-07 au
tp 2456392.059723176660
(2013-Apr-09.55972318)
0.0001133 TDB
node 13.69003905797075 1.9857e-05 deg
peri 155.4983002888396 3.1156e-05 deg
i 9.471919821206063 4.2727e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3171  
   data-arc span      49235 days (134.80 yr)  
   first obs. used      1886-04-01  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41367  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:44:51  

Additional Information
 Jupiter MOID = 2.00239 au 
 T_jup = 3.324 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.408034635354786E-15 -3.850762473692883E-15 6.271976060954805E-13 -4.522712384100469E-16 1.714731826140055E-13 4.838380245115739E-16
q -3.850762473692883E-15 1.059387834529628E-14 -1.588098580425293E-12 -5.626622736189928E-16 -4.414312741744343E-13 -1.000866897292526E-15
tp 6.271976060954805E-13 -1.588098580425293E-12 1.283625750052256E-8 -2.154919016772103E-12 2.726810832305781E-9 4.668841613727652E-12
node -4.522712384100469E-16 -5.626622736189928E-16 -2.154919016772103E-12 3.942916771043825E-10 -3.892570800595526E-10 5.277057371082236E-12
peri 1.714731826140055E-13 -4.414312741744343E-13 2.726810832305781E-9 -3.892570800595526E-10 9.70709438989661E-10 -4.199328198049742E-12
i 4.838380245115739E-16 -1.000866897292526E-15 4.668841613727652E-12 5.277057371082236E-12 -4.199328198049742E-12 1.82561622564709E-11

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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