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92 Undina (A867 NA)
Classification: Main-belt Asteroid          SPK-ID: 2000092
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 101 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1048626466207244 4.0069e-08  
a 3.185178899886448 9.0542e-09 au
q 2.851172610483868 1.3054e-07 au
i 9.932022155485502 4.2938e-06 deg
node 101.580316596767 2.6612e-05 deg
peri 239.0702970867808 3.3845e-05 deg
M 249.1220811244854 2.2375e-05 deg
tp 2459640.001749745029
(2022-Mar-01.50174975)
0.00012981 TDB
period 2076.343353510133
5.68
8.8533e-06
2.424e-08
d
yr
n .1733817286969456 7.3928e-10 deg/d
Q 3.519185189289028 1.0004e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2554  
   data-arc span      54603 days (149.49 yr)  
   first obs. used      1871-03-09  
   last obs. used      2020-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46735  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:33:31  

Additional Information
 Earth MOID = 1.85767 au 
 Jupiter MOID = 1.8522 au 
 T_jup = 3.166 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455268.5 (2010-Mar-13.0) TDB
Reference: JPL 101 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1018452538212569 4.0592e-08  
q 2.863883485097646 1.3218e-07 au
tp 2455501.420034461870
(2010-Oct-31.92003446)
0.00012833 TDB
node 101.8262804196579 2.6647e-05 deg
peri 242.0721160237064 3.4112e-05 deg
i 9.921433540447325 4.2893e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2554  
   data-arc span      54603 days (149.49 yr)  
   first obs. used      1871-03-09  
   last obs. used      2020-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46735  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:33:31  

Additional Information
 Jupiter MOID = 1.8522 au 
 T_jup = 3.166 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.647736248862876E-15 -5.356560320620644E-15 7.508703194725169E-14 -3.710464771012438E-15 -5.901805203197095E-15 7.079200248381679E-16
q -5.356560320620644E-15 1.747274170039622E-14 -2.576056119245418E-13 6.92704983101097E-15 1.843168136320912E-14 -2.167497307004135E-15
tp 7.508703194725169E-14 -2.576056119245418E-13 1.646831682543198E-8 -2.380640565343191E-11 2.769306176347281E-9 -2.3645640468446E-12
node -3.710464771012438E-15 6.92704983101097E-15 -2.380640565343191E-11 7.100455306248305E-10 -7.024699776700522E-10 3.473744597663593E-12
peri -5.901805203197095E-15 1.843168136320912E-14 2.769306176347281E-9 -7.024699776700522E-10 1.163657218423261E-9 -3.923355792938609E-12
i 7.079200248381679E-16 -2.167497307004135E-15 -2.3645640468446E-12 3.473744597663593E-12 -3.923355792938609E-12 1.839842634038242E-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 6.7   n/a MPO473761 IRAS observations used: 6
diameter diameter 126.42 km 3.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 15.941 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Schober, H.J.; Scaltriti, F.; Zappala, V. (1979) Astron. Astrophys. Suppl. Ser. 36, 1-8.]
[Warner, B.D. (2007) Minor Planet Bull. 34, 72-77.]
[Warner, B.D. (2011) http://www.minorplanetobserver.com/PDO/PDOLightcurves.htm]
[Warner, B.D (2012) Minor Planet Bull. 39, 69-80.]
[Warner, Brian D. (2014) Minor Planet Bull. 41, 230-233.]
geometric albedo albedo 0.2509   0.014 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
B-V BV 0.725   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=2.83, mean=14.49, max.=19.33) deg.
U-B UB 0.275   0.044 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=2.83, mean=14.49, max.=19.33) deg.
Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Xc   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)

92 Undina (A867 NA)          Discovered 1867-Jul-07 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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