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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 104 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1049927242409547 2.0375e-08  
a 3.185765652281559 7.5922e-09 au
q 2.851283437655256 6.7775e-08 au
i 9.931882681696274 6.8203e-07 deg
node 101.5807847555793 2.192e-06 deg
peri 238.9634926257395 1.1955e-05 deg
M 283.9187248684802 1.0313e-05 deg
tp 2459639.429173498118
(2022-Feb-28.92917350)
5.9519e-05 TDB
period 2076.917115100484
5.69
7.4245e-06
2.033e-08
d
yr
n .1733338308893385 6.1963e-10 deg/d
Q 3.520247866907861 8.3893e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2607  
   data-arc span      54800 days (150.03 yr)  
   first obs. used      1871-03-09  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47279  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:50:52  

Additional Information
 Earth MOID = 1.85585 au 
 Jupiter MOID = 1.85052 au 
 T_jup = 3.166 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457242.5 (2015-Aug-08.0) TDB
Reference: JPL 104 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1038434446582829 2.0443e-08  
q 2.856286168860185 6.8008e-08 au
tp 2457565.704465848422
(2016-Jun-26.20446585)
6.0715e-05 TDB
node 101.5930866454736 2.1922e-06 deg
peri 239.6127866316806 1.2068e-05 deg
i 9.930256698651354 6.8205e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2607  
   data-arc span      54800 days (150.03 yr)  
   first obs. used      1871-03-09  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47279  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:50:52  

Additional Information
 Jupiter MOID = 1.85052 au 
 T_jup = 3.166 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.179069217347227E-16 -1.384071626895327E-15 8.882260146865946E-14 -7.075101106444566E-15 5.966667085230704E-14 -2.426323143924048E-15
q -1.384071626895327E-15 4.625043418600836E-15 -3.31091561760597E-13 2.251742557488821E-14 -2.059097034408345E-13 7.910582854742285E-15
tp 8.882260146865946E-14 -3.31091561760597E-13 3.686321505601365E-9 -2.758149521841054E-11 7.14055638359047E-10 2.110474660375008E-11
node -7.075101106444566E-15 2.251742557488821E-14 -2.758149521841054E-11 4.805682907258537E-12 -8.999700879328827E-12 -1.473449666345741E-13
peri 5.966667085230704E-14 -2.059097034408345E-13 7.14055638359047E-10 -8.999700879328827E-12 1.456373659450086E-10 3.949573770448372E-12
i -2.426323143924048E-15 7.910582854742285E-15 2.110474660375008E-11 -1.473449666345741E-13 3.949573770448372E-12 4.651950136063358E-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 6.78   n/a MPCxxxxx 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. 2020-October); 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.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
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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