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JPL Small-Body Database Browser
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255 Oppavia
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0790095432665935 4.1208e-08  
a 2.744953847798266 9.8039e-09 au
q 2.528076297995847 1.1144e-07 au
i 9.464517392185169 4.4939e-06 deg
node 13.59520236862755 2.2733e-05 deg
peri 155.4392646645403 3.3172e-05 deg
M 204.9679650078097 2.4804e-05 deg
tp 2459715.852244456621
(2022-May-16.35224446)		 0.00011517 TDB
period 1661.119961544442
4.55		 8.8993e-06
2.436e-08		 d
yr
n .2167212533315695 1.1611e-09 deg/d
Q 2.961831397600686 1.0579e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2623  
   data-arc span      48826 days (133.68 yr)  
   first obs. used      1886-04-01  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44678  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:40:15  

Additional Information
 Earth MOID = 1.53615 au 
 Jupiter MOID = 2.0036 au 
 T_jup = 3.324 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455883.5 (2011-Nov-18.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07708916433095206 4.1481e-08  
q 2.536904767476649 1.1174e-07 au
tp 2456388.179159805492
(2013-Apr-05.67915981)		 0.00011538 TDB
node 13.72829784502902 2.267e-05 deg
peri 154.4801231057147 3.3452e-05 deg
i 9.475668393050579 4.4974e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2623  
   data-arc span      48826 days (133.68 yr)  
   first obs. used      1886-04-01  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44678  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:40:15  

Additional Information
 Jupiter MOID = 2.0036 au 
 T_jup = 3.324 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.720714242850727E-15 -4.620132817739893E-15 2.927411874392861E-13 7.200657562334449E-16 7.951083969892709E-14 -2.395883662222809E-16
q -4.620132817739893E-15 1.24854853946877E-14 -7.303114853600089E-13 -2.467529105489101E-15 -2.091333777774407E-13 3.722948582671335E-16
tp 2.927411874392861E-13 -7.303114853600089E-13 1.331200244521803E-8 -1.421749141625236E-12 2.849012341612318E-9 4.707083274891011E-12
node 7.200657562334449E-16 -2.467529105489101E-15 -1.421749141625236E-12 5.139197067881539E-10 -5.071647707686732E-10 -8.16572487235063E-12
peri 7.951083969892709E-14 -2.091333777774407E-13 2.849012341612318E-9 -5.071647707686732E-10 1.119035638302004E-9 9.095860549927823E-12
i -2.395883662222809E-16 3.722948582671335E-16 4.707083274891011E-12 -8.16572487235063E-12 9.095860549927823E-12 2.022698694759693E-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 10.3   n/a MPO502155 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. 2019-August); 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          Discovered 1886-Mar-31 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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 09:07 00:02 Jupiter 1.99736688262423 1.99736653448551 1.9973672307634 3.87868781712293 3.76776857595241 2498854.879679611 1.7401220669903 164.657604736488 14.2586195706202 -88.2131616277145 3536380.61512021 T 34 CATAB v2.0f-lin.ifort 2019-Dec-13 20:40:29 2019-Dec-13 20:40

Alternate Designations
 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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