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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 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07894562675388529 2.3914e-08  
a 2.745404989924272 8.3484e-09 au
q 2.528667272301456 6.6739e-08 au
i 9.463815190952964 8.293e-07 deg
node 13.59404448913038 1.5195e-06 deg
peri 155.3119572818209 1.5558e-05 deg
M 248.4460002091566 1.8672e-05 deg
tp 2459715.361835660160
(2022-May-15.86183566)
8.7237e-05 TDB
period 1661.5294941031
4.55
7.5787e-06
2.075e-08
d
yr
n .2166678360376198 9.8829e-10 deg/d
Q 2.962142707547088 9.0075e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3254  
   data-arc span      49286 days (134.94 yr)  
   first obs. used      1886-04-01  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41091  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:34:58  

Additional Information
 Earth MOID = 1.53639 au 
 Jupiter MOID = 2.00239 au 
 T_jup = 3.324 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456650.5 (2013-Dec-24.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07707885182340461 2.4047e-08  
q 2.534562435635654 6.6967e-08 au
tp 2456392.296822780985
(2013-Apr-09.79682278)
8.2699e-05 TDB
node 13.6879915086213 1.5152e-06 deg
peri 155.5577782938109 1.5819e-05 deg
i 9.471151324864259 8.2923e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3254  
   data-arc span      49286 days (134.94 yr)  
   first obs. used      1886-04-01  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41091  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:34:58  

Additional Information
 Jupiter MOID = 2.00239 au 
 T_jup = 3.324 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.782374909069553E-16 -1.599593534759032E-15 -1.504588172881061E-13 3.149130354561684E-15 -1.611578618899979E-14 8.013264759593697E-15
q -1.599593534759032E-15 4.484600884801936E-15 6.030763731669478E-13 -9.114913728674631E-15 8.58263219078971E-14 -2.170816091370083E-14
tp -1.504588172881061E-13 6.030763731669478E-13 6.839130673229682E-9 6.424447251871909E-12 1.301906264597855E-9 1.361819799672092E-11
node 3.149130354561684E-15 -9.114913728674631E-15 6.424447251871909E-12 2.295817581942831E-12 -3.956895965599801E-13 3.395368877124215E-13
peri -1.611578618899979E-14 8.58263219078971E-14 1.301906264597855E-9 -3.956895965599801E-13 2.502402310732944E-10 2.784018341316426E-12
i 8.013264759593697E-15 -2.170816091370083E-14 1.361819799672092E-11 3.395368877124215E-13 2.784018341316426E-12 6.876162554491282E-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 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2129-Jul-13 09:06 00:01 Jupiter 1.99736698057965 1.99736678294158 1.99736717821783 3.87868792336626 3.767768691465 2498854.878826600 1.45254005163004 117.6370787721 8.50191840229739 -89.2715664444084 9357859.52748903 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 10:36:31 2021-Apr-12 10:36

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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